[youtube:search_url] Fix extraction (Closes #6578)

youtube_dl/extractor/youtube.py

@@ -1762,7 +1762,7 @@ class YoutubeSearchURLIE(InfoExtractor):
             r'(?s)<ol[^>]+class="item-section"(.*?)</ol>', webpage, 'result HTML')
 
         part_codes = re.findall(
-            r'(?s)<h3 class="yt-lockup-title">(.*?)</h3>', result_code)
+            r'(?s)<h3[^>]+class="[^"]*yt-lockup-title[^"]*"[^>]*>(.*?)</h3>', result_code)
         entries = []
         for part_code in part_codes:
             part_title = self._html_search_regex(