make app work on flutter stable channel

Author: khanhnwin

agentic_app_manager_next_25/pubspec.yaml

@@ -19,7 +19,7 @@ publish_to: 'none' # Remove this line if you wish to publish to pub.dev
 version: 1.0.0+1
 
 environment:
-  sdk: ^3.8.0-70.0.dev
+  sdk: ^3.7.2-70.0.dev
 
 # Dependencies specify other packages that your package needs in order to work.
 # To automatically upgrade your package dependencies to the latest versions