Backport of "decodebin3: only force streams-selected seqnum after a select-streams" into 1.16
requested to merge tpm/gst-plugins-base:backport-mr-860-into-1.16-decodebin3-streams-selected-seqnum into 1.16
Backport of !860 (merged) "decodebin3: only force streams-selected seqnum after a select-streams".
Commits:
- 40fde5fc decodebin3: only force streams-selected seqnum after a select-streams