chore(authenticator): export social_button (#5880)

* expose the social_button widget from authenticator

* removed unused import as a consequence of main change

Author: ekjotmultani

packages/authenticator/amplify_authenticator/lib/amplify_authenticator.dart

@@ -93,6 +93,7 @@ export 'src/widgets/form_field.dart'
         SignUpFormField,
         TotpSetupFormField,
         VerifyUserFormField;
+export 'src/widgets/social/social_button.dart';
 
 /// {@template amplify_authenticator.authenticator}
 /// # Amplify Authenticator

packages/authenticator/amplify_authenticator/lib/src/widgets/form.dart

@@ -12,7 +12,6 @@ import 'package:amplify_authenticator/src/utils/list.dart';
 import 'package:amplify_authenticator/src/widgets/button.dart';
 import 'package:amplify_authenticator/src/widgets/component.dart';
 import 'package:amplify_authenticator/src/widgets/form_field.dart';
-import 'package:amplify_authenticator/src/widgets/social/social_button.dart';
 // ignore: implementation_imports
 import 'package:amplify_core/src/config/amplify_outputs/auth/identity_provider.dart';
 // ignore: implementation_imports