更新webview，跟换显示html 控件，更新fluttertoast版本

lib/widget/clx_web_widget.dart

+
+export 'package:webview_flutter/webview_flutter.dart';

pubspec.yaml

@@ -23,9 +23,11 @@ dependencies:
   # 日志打印 https://pub.dev/packages/logger
   logger: ^1.1.0
   # toast https://pub.dev/packages/fluttertoast
-  fluttertoast: 8.0.9
+  fluttertoast: ^8.2.1
   # webview https://pub.dev/packages/webview_flutter
-  flutter_html: ^2.2.1
+  webview_flutter: ^4.0.5
+  # 显示网页Widget https://pub.dev/packages/flutter_widget_from_html_core
+  flutter_widget_from_html_core: ^0.10.0
   # 包信息 https://pub.dev/packages/package_info_plus
   package_info_plus: ^1.4.2
   # 权限 https://pub.dev/packages/permission_handler