Backported fixes from TeamNewPipe#864

TeamNewPipe@090debd

Author: litetex

extractor/src/main/java/org/schabi/newpipe/extractor/services/youtube/extractors/YoutubeStreamExtractor.java

@@ -841,7 +841,8 @@ public void onFetchPage(@Nonnull final Downloader downloader)
                 .getBytes(StandardCharsets.UTF_8);
         nextResponse = getJsonPostResponse(NEXT, body, localization);
 
-        if ((!isAgeRestricted && !isLive && !isPostLive)
+        // this will only be run for post-live and normal streams
+        if ((!isAgeRestricted && !isLive)
                 || isAndroidClientFetchForced) {
             try {
                 fetchAndroidMobileJsonPlayer(contentCountry, localization, videoId);