Backport of "videorate: Don't forget last_ts on caps changes" into 1.22
requested to merge tpm/gstreamer:mr-5687-backport-into-1.22-videorate-dont-forget-ts-on-caps-changes into 1.22
Backport of !5687 (merged) "videorate: Don't forget last_ts on caps changes".
Commits:
- 150adf6d videorate: Don't forget last_ts on caps changes