fix: WebView 手势接管偶发失败

lib/main.dart

@@ -2,6 +2,8 @@ import 'dart:async';
 import 'dart:convert';
 import 'dart:io';
 
+import 'package:flutter/foundation.dart';
+import 'package:flutter/gestures.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
 import 'package:permission_handler/permission_handler.dart';
@@ -105,6 +107,11 @@ class H5ShellPage extends StatefulWidget {
 }
 
 class _H5ShellPageState extends State<H5ShellPage> with WidgetsBindingObserver {
+  static final Set<Factory<OneSequenceGestureRecognizer>>
+      _webViewGestureRecognizers = <Factory<OneSequenceGestureRecognizer>>{
+    Factory<EagerGestureRecognizer>(() => EagerGestureRecognizer()),
+  };
+
   late H5Line _h5Line;
   late _H5LineWebViewSlot _lineSlot;
 
@@ -905,6 +912,7 @@ class _H5ShellPageState extends State<H5ShellPage> with WidgetsBindingObserver {
     PlatformWebViewWidgetCreationParams params =
         PlatformWebViewWidgetCreationParams(
       controller: _lineSlot.controller.platform,
+      gestureRecognizers: _webViewGestureRecognizers,
     );
 
     if (_lineSlot.controller.platform is AndroidWebViewController) {