opt: escape performReassemble (#1864)

lib/utils/extension/get_ext.dart

@@ -1,6 +1,15 @@
+import 'package:PiliPlus/main.dart';
 import 'package:get/get.dart';
 
 extension GetExt on GetInterface {
   S putOrFind<S>(InstanceBuilderCallback<S> dep, {String? tag}) =>
       GetInstance().putOrFind(dep, tag: tag);
+
+  void updateMyAppTheme() {
+    final (l, d) = MyApp.getAllTheme();
+    rootController
+      ..theme = l
+      ..darkTheme = d
+      ..update();
+  }
 }