acc: update tests for lakebase instance and catalog (#3543)

## Changes
<!-- Brief summary of your changes that is easy to understand -->

- expect `effective_enable_pg_native_login` field to be returned when
getting a lakebase instance
-  remove the call to describe the database instance 

## Why
<!-- Why are these changes needed? Provide the context that the reviewer
might be missing.
For example, were there any decisions behind the change that are not
reflected in the code itself? -->
- Lakebase API started to return `effective_enable_pg_native_login`
field on Sep 3rd 2025
- Reading the database instance is out of scope for the lakebase catalog
test

## Tests
<!-- How have you tested the changes? -->
Ran the tests for lakebase instance and catalog from local machine
against one cloud environment

<!-- If your PR needs to be included in the release notes for next
release,
add a separate entry in NEXT_CHANGELOG.md as part of your PR. -->

Author: anton-107

acceptance/bundle/deploy/lakebase/database-catalog/output.txt

@@ -28,21 +28,6 @@ Deploying resources...
 Updating deployment state...
 Deployment complete!
 
->>> [CLI] database get-database-instance test-db-catalog-[UNIQUE_NAME]
-{
-  "capacity": "CU_1",
-  "creation_time": "[TIMESTAMP]Z",
-  "creator": "[USERNAME]",
-  "effective_enable_readable_secondaries": false,
-  "effective_node_count": 1,
-  "effective_retention_window_in_days": 7,
-  "effective_stopped": false,
-  "name": "test-db-catalog-[UNIQUE_NAME]",
-  "pg_version": "PG_VERSION_16",
-  "state": "AVAILABLE",
-  "uid": "[UUID]"
-}
-
 >>> [CLI] bundle summary
 Name: deploy-lakebase-catalog-[UNIQUE_NAME]
 Target: default

acceptance/bundle/deploy/lakebase/database-catalog/script

@@ -10,6 +10,4 @@ trace $CLI bundle validate
 # URL is excluded because some cloud envs add an ?0= query param and some don't
 trace $CLI bundle summary | grep -v "URL"
 trace $CLI bundle deploy
-# _dns fields are excluded since they differ between cloud envs
-trace $CLI database get-database-instance "test-db-catalog-${UNIQUE_NAME}" | jq 'del(.read_only_dns, .read_write_dns)'
 trace $CLI bundle summary | grep -v "URL"

acceptance/bundle/deploy/lakebase/database-instance/single-instance/output.txt

@@ -31,6 +31,7 @@ Deployment complete!
   "capacity": "CU_1",
   "creation_time": "[TIMESTAMP]Z",
   "creator": "[USERNAME]",
+  "effective_enable_pg_native_login": false,
   "effective_enable_readable_secondaries": false,
   "effective_node_count": 1,
   "effective_retention_window_in_days": 7,

libs/testserver/database_instances.go

@@ -31,6 +31,7 @@ func (s *FakeWorkspace) DatabaseInstanceCreate(req Request) Response {
 	databaseInstance.CreationTime = time.Now().UTC().Format(time.RFC3339)
 	databaseInstance.EffectiveEnableReadableSecondaries = false
 	databaseInstance.EffectiveStopped = false
+	databaseInstance.EffectiveEnablePgNativeLogin = false
 
 	s.DatabaseInstances[databaseInstance.Name] = databaseInstance
 
@@ -59,6 +60,7 @@ func DatabaseInstanceMapGet(w *FakeWorkspace, collection map[string]database.Dat
 	// Explicitly set boolean fields that should always be present
 	result["effective_enable_readable_secondaries"] = value.EffectiveEnableReadableSecondaries
 	result["effective_stopped"] = value.EffectiveStopped
+	result["effective_enable_pg_native_login"] = value.EffectiveEnablePgNativeLogin
 
 	return Response{
 		Body: result,