Fix SoundcloudGoPlusTrack

https://soundcloud.com/martinsolveig/places#t=0 has related streams

Author: XiangRongLin

extractor/src/test/java/org/schabi/newpipe/extractor/services/soundcloud/SoundcloudStreamExtractorTest.java

@@ -115,7 +115,7 @@ public static void setUp() throws Exception {
         @Override public long expectedDislikeCountAtLeast() { return -1; }
         @Override public boolean expectedHasAudioStreams() { return false; }
         @Override public boolean expectedHasVideoStreams() { return false; }
-        @Override public boolean expectedHasRelatedItems() { return false; }
+        @Override public boolean expectedHasRelatedItems() { return true; }
         @Override public boolean expectedHasSubtitles() { return false; }
         @Override public boolean expectedHasFrames() { return false; }
         @Override public int expectedStreamSegmentsCount() { return 0; }