fix(location): underscores are not allowed in the name (aws#32046)

### Issue # (if applicable)

N/A

### Reason for this change
According to the [CFn documentation](https://docs.aws.amazon.com/ja_jp/AWSCloudFormation/latest/UserGuide/aws-resource-location-tracker.html#cfn-location-tracker-trackername), underscores should be allowed in the name of the following resources. 

However, the Regex pattern is incorrect, and underscores are not permitted.

* [geofenceCollectionName](https://docs.aws.amazon.com/cdk/api/v2/docs/@aws-cdk_aws-location-alpha.GeofenceCollection.html#geofencecollectionnamespan-classapi-icon-api-icon-experimental-titlethis-api-element-is-experimental-it-may-change-without-noticespan)
* [placeIndexName](https://docs.aws.amazon.com/cdk/api/v2/docs/@aws-cdk_aws-location-alpha.PlaceIndex.html#placeindexnamespan-classapi-icon-api-icon-experimental-titlethis-api-element-is-experimental-it-may-change-without-noticespan)
* [routeCalculatorName](https://docs.aws.amazon.com/cdk/api/v2/docs/@aws-cdk_aws-location-alpha.RouteCalculator.html#routecalculatornamespan-classapi-icon-api-icon-experimental-titlethis-api-element-is-experimental-it-may-change-without-noticespan)
* [trackerName](https://docs.aws.amazon.com/cdk/api/v2/docs/@aws-cdk_aws-location-alpha.Tracker.html#trackernamespan-classapi-icon-api-icon-experimental-titlethis-api-element-is-experimental-it-may-change-without-noticespan)


### Description of changes
Fix regex pattern in validations.
Additionally, I separated the Regex pattern validation and the character count validation to make it more user-friendly.



### Description of how you validated changes
Add unit tests and integ tests.



### Checklist
- [x] My code adheres to the [CONTRIBUTING GUIDE](https://github.com/aws/aws-cdk/blob/main/CONTRIBUTING.md) and [DESIGN GUIDELINES](https://github.com/aws/aws-cdk/blob/main/docs/DESIGN_GUIDELINES.md)

----

*By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license*

Author: mazyu36

packages/@aws-cdk/aws-location-alpha/lib/geofence-collection.ts

@@ -118,8 +118,14 @@ export class GeofenceCollection extends Resource implements IGeofenceCollection
       throw new Error(`\`description\` must be between 0 and 1000 characters. Received: ${props.description.length} characters`);
     }
 
-    if (props.geofenceCollectionName && !Token.isUnresolved(props.geofenceCollectionName) && !/^[-.\w]{1,100}$/.test(props.geofenceCollectionName)) {
-      throw new Error(`Invalid geofence collection name. The geofence collection name must be between 1 and 100 characters and contain only alphanumeric characters, hyphens, periods and underscores. Received: ${props.geofenceCollectionName}`);
+    if (props.geofenceCollectionName !== undefined && !Token.isUnresolved(props.geofenceCollectionName)) {
+      if (props.geofenceCollectionName.length < 1 || props.geofenceCollectionName.length > 100) {
+        throw new Error(`\`geofenceCollectionName\` must be between 1 and 100 characters, got: ${props.geofenceCollectionName.length} characters.`);
+      }
+
+      if (!/^[-._\w]+$/.test(props.geofenceCollectionName)) {
+        throw new Error(`\`geofenceCollectionName\` must contain only alphanumeric characters, hyphens, periods and underscores, got: ${props.geofenceCollectionName}.`);
+      }
     }
 
     super(scope, id, {

packages/@aws-cdk/aws-location-alpha/lib/place-index.ts

@@ -137,8 +137,14 @@ export class PlaceIndex extends Resource implements IPlaceIndex {
       throw new Error(`\`description\` must be between 0 and 1000 characters. Received: ${props.description.length} characters`);
     }
 
-    if (props.placeIndexName && !Token.isUnresolved(props.placeIndexName) && !/^[-.\w]{1,100}$/.test(props.placeIndexName)) {
-      throw new Error(`Invalid place index name. The place index name must be between 1 and 100 characters and contain only alphanumeric characters, hyphens, periods and underscores. Received: ${props.placeIndexName}`);
+    if (props.placeIndexName !== undefined && !Token.isUnresolved(props.placeIndexName)) {
+      if (props.placeIndexName.length < 1 || props.placeIndexName.length > 100) {
+        throw new Error(`\`placeIndexName\` must be between 1 and 100 characters, got: ${props.placeIndexName.length} characters.`);
+      }
+
+      if (!/^[-._\w]+$/.test(props.placeIndexName)) {
+        throw new Error(`\`placeIndexName\` must contain only alphanumeric characters, hyphens, periods and underscores, got: ${props.placeIndexName}.`);
+      }
     }
 
     super(scope, id, {

packages/@aws-cdk/aws-location-alpha/lib/route-calculator.ts

@@ -114,8 +114,14 @@ export class RouteCalculator extends Resource implements IRouteCalculator {
       throw new Error(`\`description\` must be between 0 and 1000 characters. Received: ${props.description.length} characters`);
     }
 
-    if (props.routeCalculatorName && !Token.isUnresolved(props.routeCalculatorName) && !/^[-.\w]{1,100}$/.test(props.routeCalculatorName)) {
-      throw new Error(`Invalid route calculator name. The route calculator name must be between 1 and 100 characters and contain only alphanumeric characters, hyphens, periods and underscores. Received: ${props.routeCalculatorName}`);
+    if (props.routeCalculatorName !== undefined && !Token.isUnresolved(props.routeCalculatorName)) {
+      if (props.routeCalculatorName.length < 1 || props.routeCalculatorName.length > 100) {
+        throw new Error(`\`routeCalculatorName\` must be between 1 and 100 characters, got: ${props.routeCalculatorName.length} characters.`);
+      }
+
+      if (!/^[-._\w]+$/.test(props.routeCalculatorName)) {
+        throw new Error(`\`routeCalculatorName\` must contain only alphanumeric characters, hyphens, periods and underscores, got: ${props.routeCalculatorName}.`);
+      }
     }
 
     super(scope, id, {

packages/@aws-cdk/aws-location-alpha/lib/tracker.ts

@@ -177,8 +177,14 @@ export class Tracker extends Resource implements ITracker {
       throw new Error(`\`description\` must be between 0 and 1000 characters. Received: ${props.description.length} characters`);
     }
 
-    if (props.trackerName && !Token.isUnresolved(props.trackerName) && !/^[-.\w]{1,100}$/.test(props.trackerName)) {
-      throw new Error(`Invalid tracker name. The tracker name must be between 1 and 100 characters and contain only alphanumeric characters, hyphens, periods and underscores. Received: ${props.trackerName}`);
+    if (props.trackerName !== undefined && !Token.isUnresolved(props.trackerName)) {
+      if (props.trackerName.length < 1 || props.trackerName.length > 100) {
+        throw new Error(`\`trackerName\` must be between 1 and 100 characters, got: ${props.trackerName.length} characters.`);
+      }
+
+      if (!/^[-._\w]+$/.test(props.trackerName)) {
+        throw new Error(`\`trackerName\` must contain only alphanumeric characters, hyphens, periods and underscores, got: ${props.trackerName}.`);
+      }
     }
 
     if (!Token.isUnresolved(props.kmsKey)

packages/@aws-cdk/aws-location-alpha/test/geofence-collection.test.ts

@@ -32,10 +32,26 @@ test('throws with invalid description', () => {
   })).toThrow('`description` must be between 0 and 1000 characters. Received: 1001 characters');
 });
 
+test('create a geofence collection with name', () => {
+  new GeofenceCollection(stack, 'GeofenceCollection', {
+    geofenceCollectionName: 'my_geofence_collection',
+  });
+
+  Template.fromStack(stack).hasResourceProperties('AWS::Location::GeofenceCollection', {
+    CollectionName: 'my_geofence_collection',
+  });
+});
+
+test.each(['', 'a'.repeat(101)])('throws with invalid name, got: %s', (geofenceCollectionName) => {
+  expect(() => new GeofenceCollection(stack, 'GeofenceCollection', {
+    geofenceCollectionName,
+  })).toThrow(`\`geofenceCollectionName\` must be between 1 and 100 characters, got: ${geofenceCollectionName.length} characters.`);
+});
+
 test('throws with invalid name', () => {
   expect(() => new GeofenceCollection(stack, 'GeofenceCollection', {
     geofenceCollectionName: 'inv@lid',
-  })).toThrow('Invalid geofence collection name. The geofence collection name must be between 1 and 100 characters and contain only alphanumeric characters, hyphens, periods and underscores. Received: inv@lid');
+  })).toThrow('`geofenceCollectionName` must contain only alphanumeric characters, hyphens, periods and underscores, got: inv@lid.');
 });
 
 test('grant read actions', () => {

packages/@aws-cdk/aws-location-alpha/test/integ.geofence-collection.js.snapshot/GeofenceCollectionTestDefaultTestDeployAssert44609017.assets.json

@@ -38,7 +38,7 @@
   "GeofenceCollection6FAC681F": {
    "Type": "AWS::Location::GeofenceCollection",
    "Properties": {
-    "CollectionName": "MyGeofenceCollection",
+    "CollectionName": "my_geofence_collection",
     "Description": "test",
     "KmsKeyId": {
      "Fn::GetAtt": [