[fix]webView深色模式背景颜色显示问题

lib/module/browser/controller.dart

@@ -2,6 +2,8 @@ import 'package:electronic_assistant/base/base_controller.dart';
 import 'package:get/get.dart';
 import 'package:webview_flutter/webview_flutter.dart';
 
+import '../../resource/colors.gen.dart';
+
 class BrowserController extends BaseController {
   String url = (Get.arguments is String) ? (Get.arguments as String) : '';
 
@@ -23,6 +25,7 @@ class BrowserController extends BaseController {
 
   void _initWebSetting() {
     webViewController.setJavaScriptMode(JavaScriptMode.unrestricted);
+    webViewController.setBackgroundColor(ColorName.white);
     webViewController.setNavigationDelegate(
       NavigationDelegate(
         onPageFinished: (String url) {