update idController when create new connection

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

flutter/lib/desktop/pages/connection_page.dart

@@ -68,6 +68,7 @@ class _ConnectionPageState extends State<ConnectionPage>
       _idController.selection = TextSelection(
           baseOffset: 0, extentOffset: _idController.value.text.length);
     });
+    Get.put<IDTextEditingController>(_idController);
     windowManager.addListener(this);
   }