refactor: remove the unused submitUserInfo method and enhance the searchable dropdown functionality

- Removed `submitUserInfo` from auth services and integrations.
- Refined dropdown with new multi-select and searchable options.
- Added `PersianFormatter` for better input handling.
- Updated `local.properties` to set flutter build mode to debug.

packages/core/lib/utils/extension/string_utils.dart

@@ -61,4 +61,9 @@ extension XString on String? {
   }
 
   int get versionNumber => int.parse(this?.replaceAll(".", '') ?? '0');
+
+  bool get isDifferentDigits {
+    final regex = RegExp(r'[۰-۹٠-٩]');
+    return regex.hasMatch(this ?? '');
+  }
 }