test: fix default WPT titles

PR-URL: #46778
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com>

Author: panva

test/common/wpt.js

@@ -781,6 +781,9 @@ class WPTRunner {
 resultCallback(filename,test,reportResult){
 conststatus=this.getTestStatus(test.status);
 consttitle=this.getTestTitle(filename);
+if(/^Untitled(\d+)?$/.test(test.name)){
+test.name=`${title}${test.name.slice(8)}`;
+}
 console.log(`---- ${title} ----`);
 if(status!==kPass){
 this.fail(filename,test,status,reportResult);