test(auth): Debug logging for custom endpoint configuration is passed correctly

Author: nathan-dovire

packages/amplify_core/lib/src/config/auth/auth_config.dart

@@ -133,11 +133,22 @@ class AuthConfig extends AmplifyPluginConfigMap {
           )
         : null;
 
+    final endpoint = userPool?.endpoint;
+    if (endpoint != null) {
+      safePrint(
+        '📋 [Auth Config] Gen 1 config contains Endpoint: $endpoint',
+      );
+    } else {
+      safePrint(
+        '📋 [Auth Config] No Endpoint found in Gen 1 config',
+      );
+    }
+
     return AuthOutputs(
       awsRegion: region,
       userPoolId: userPool?.poolId,
       userPoolClientId: userPool?.appClientId,
-      userPoolEndpoint: userPool?.endpoint,
+      userPoolEndpoint: endpoint,
       appClientSecret: userPool?.appClientSecret,
       identityPoolId: identityPool?.poolId,
       passwordPolicy: passwordPolicy,

packages/auth/amplify_auth_cognito_dart/lib/src/sdk/sdk_bridge.dart

@@ -189,7 +189,23 @@ class WrappedCognitoIdentityProviderClient
            WithHeader(AWSHeaders.cacheControl, 'no-store'),
          ],
        ),
-       _dependencyManager = dependencyManager;
+       _dependencyManager = dependencyManager {
+    // Log the actual baseUri being used
+    final baseUri = endpoint == null
+        ? null
+        : (endpoint.startsWith('http')
+              ? Uri.parse(endpoint)
+              : Uri.parse('https://$endpoint'));
+    if (baseUri != null) {
+      safePrint(
+        '🌐 [Cognito SDK] Using custom baseUri: $baseUri',
+      );
+    } else {
+      safePrint(
+        '🌐 [Cognito SDK] Using default AWS Cognito endpoint for region: $region',
+      );
+    }
+  }
 
   final DependencyManager _dependencyManager;
   final CognitoIdentityProviderClient _base;

packages/auth/amplify_auth_cognito_dart/lib/src/state/machines/configuration_state_machine.dart

@@ -73,6 +73,18 @@ final class ConfigurationStateMachine
     }
     addInstance(authOutputs);
     final waiters = <Future<void>>[];
+    
+    // Log endpoint configuration
+    if (authOutputs.userPoolEndpoint != null) {
+      safePrint(
+        '🔧 [Amplify Auth] Configuring Cognito with custom endpoint: ${authOutputs.userPoolEndpoint}',
+      );
+    } else {
+      safePrint(
+        '🔧 [Amplify Auth] Configuring Cognito with default AWS endpoint (no custom endpoint set)',
+      );
+    }
+    
     addInstance<CognitoIdentityProviderClient>(
       WrappedCognitoIdentityProviderClient(
         region: authOutputs.awsRegion,