feat: flutter upgrade to v3.10.0 (#113)

ui/flutter/test/widget_test.dart

@@ -5,10 +5,8 @@
 // gestures. You can also use WidgetTester to find child widgets in the widget
 // tree, read text, and verify that the values of widget properties are correct.
 
-import 'package:flutter/material.dart';
 import 'package:flutter_test/flutter_test.dart';
 
-import 'package:gopeed/main.dart';
 
 void main() {
   testWidgets('Counter increments smoke test', (WidgetTester tester) async {});