Backport of "qtdemux: fix wrong full_range offset when parsing colr box" into 1.22
requested to merge gstreamer-backport-bot/gstreamer:mr-6616-backport-into-1.22-dev-mp4-colr into 1.22
Backport of !6616 (merged) "qtdemux: fix wrong full_range offset when parsing colr box".
Commits:
- cd95d020 qtdemux: fix wrong full_range offset when parsing colr box