[youtube:api] Do not use seek when reading HTTPError response

Authored-by: coletdjnz

yt_dlp/extractor/youtube.py

@@ -760,10 +760,12 @@ class YoutubeBaseInfoExtractor(InfoExtractor):
                     note='%s%s' % (note, ' (retry #%d)' % count if count else ''))
             except ExtractorError as e:
                 if isinstance(e.cause, network_exceptions):
-                    if isinstance(e.cause, compat_HTTPError) and not is_html(e.cause.read(512)):
-                        e.cause.seek(0)
+                    if isinstance(e.cause, compat_HTTPError):
+                        first_bytes = e.cause.read(512)
+                        if not is_html(first_bytes):
                             yt_error = try_get(
-                            self._parse_json(e.cause.read().decode(), item_id, fatal=False),
+                                self._parse_json(
+                                    self._webpage_read_content(e.cause, None, item_id, prefix=first_bytes) or '{}', item_id, fatal=False),
                                 lambda x: x['error']['message'], compat_str)
                             if yt_error:
                                 self._report_alerts([('ERROR', yt_error)], fatal=False)