fix: chat ping conflict

Author: feildmaster

src/base/chat/notify.new.js

@@ -10,15 +10,15 @@ import style from 'src/utils/style.js';
 
 import { pingExtras } from './toast.js';
 
-style.add('.highlight { color: yellow; }');
+style.add('.us-ping { color: yellow; }');
 
 const setting = settings.register({
   name: Translation.Setting('ping'),
   key: 'underscript.disable.ping',
   page: 'Chat',
 });
 
-const mask = '<span class="highlight">$1</span>';
+const mask = '<span class="us-ping">$1</span>';
 
 let disabled = false;
 let notified = false;