Address linter warnings

This adds a missing comma and removes unnecessary `break` statements.

[changelog]
changed: addressed linter warnings for missing comma and unnecessary `break` statements

<!-- ps-id: 4909f211-704e-4d14-8465-1bbf18a5c3ca -->

lib/src/utils/html_utils.dart

@@ -1,5 +1,6 @@
 import 'dart:convert';
 import 'dart:typed_data';
+
 import 'package:path/path.dart' as p;
 import 'package:uuid/uuid.dart';
 import 'package:webviewx/src/utils/constants.dart';
@@ -243,7 +244,7 @@ class HtmlUtils {
     return embedJsInHtmlSource(
       source,
       {
-        'parent.$jsToDartConnectorFN$windowDisambiguator && parent.$jsToDartConnectorFN$windowDisambiguator(window)'
+        'parent.$jsToDartConnectorFN$windowDisambiguator && parent.$jsToDartConnectorFN$windowDisambiguator(window)',
       },
       position: EmbedPosition.aboveHeadCloseTag,
     );

lib/src/view/impl/web.dart

@@ -423,7 +423,6 @@ class WebViewXState extends State<WebViewX> {
           windowDisambiguator: iframeViewType,
           forWeb: true,
         );
-        break;
       case SourceType.url:
       case SourceType.urlBypass:
         if (source == 'about:blank') {
@@ -450,7 +449,6 @@ class WebViewXState extends State<WebViewX> {
             headers: model.headers,
           );
         }
-        break;
     }
   }