Fix naming for Resource (Azure#51793)

Author: live1206

eng/packages/http-client-csharp-mgmt/generator/Azure.Generator.Management/src/Providers/ResourceClientProvider.cs

@@ -85,7 +85,7 @@ private ResourceClientProvider(string resourceName, InputModelType model, Resour
 
         internal ResourceCollectionClientProvider? ResourceCollection { get; private set; }
 
-        protected override string BuildName() => $"{ResourceName}Resource";
+        protected override string BuildName() => ResourceName.EndsWith("Resource") ? ResourceName : $"{ResourceName}Resource";
 
         private OperationSourceProvider? _source;
         internal OperationSourceProvider Source => _source ??= new OperationSourceProvider(this);

eng/packages/http-client-csharp-mgmt/generator/TestProjects/Local/Mgmt-TypeSpec/bar.tsp

@@ -44,8 +44,8 @@ interface Bars {
 
 @singleton("current")
 @parentResource(Bar)
-model BarSettings is ProxyResource<BarSettingsProperties> {
-  ...ResourceNameParameter<BarSettings, SegmentName = "settings">;
+model BarSettingsResource is ProxyResource<BarSettingsProperties> {
+  ...ResourceNameParameter<BarSettingsResource, SegmentName = "settings">;
 
   stringArray?: string[];
 }
@@ -58,7 +58,7 @@ model BarSettingsProperties {
 
 @armResourceOperations
 interface BarSettingsOperations {
-  createOrUpdate is ArmResourceCreateOrUpdateAsync<BarSettings>;
+  createOrUpdate is ArmResourceCreateOrUpdateAsync<BarSettingsResource>;
 
-  get is ArmResourceRead<BarSettings>;
+  get is ArmResourceRead<BarSettingsResource>;
 }