Add support for old numeric IDs

Seems that the old numeric IDs still work with the old URL format. Since the old numeric IDs no longer show up on the website it would probably be safe to remove them from the extractor, but it wasn't a lot of additional code to add support for them.

yt_dlp/extractor/xvideos.py

@@ -207,8 +207,19 @@ class XVideosQuickiesIE(InfoExtractor):
             'duration': 9,
             'thumbnail': r're:^https://cdn.*-pic.xvideos-cdn.com/.+\.jpg',
         }
+    }, {
+        'url': 'https://www.xvideos.com/amateur-channels/wifeluna#quickies/a/47258683',
+        'md5': '16e322a93282667f1963915568f782c1',
+        'info_dict': {
+            'id': '47258683',
+            'ext': 'mp4',
+            'title': 'Verification video',
+            'age_limit': 18,
+            'duration': 16,
+            'thumbnail': r're:^https://cdn.*-pic.xvideos-cdn.com/.+\.jpg',
+        }
     }]
 
     def _real_extract(self, url):
         domain, id_ = self._match_valid_url(url).group('domain', 'id')
-        return self.url_result(f'https://{domain}/video.{id_}/_', XVideosIE, id_)
+        return self.url_result(f'https://{domain}/video{"." if int_or_none(id_) == None else ""}{id_}/_', XVideosIE, id_)