fixed cm control page width and not resizable

Signed-off-by: 21pages <pages21@163.com>

flutter/lib/main.dart

@@ -225,6 +225,7 @@ void runConnectionManagerScreen(bool hide) async {
   } else {
     await showCmWindow(isStartup: true);
   }
+  windowManager.setResizable(false);
   // Start the uni links handler and redirect links to Native, not for Flutter.
   listenUniLinks(handleByFlutter: false);
 }