Backport of "d3d12videosink: HWND event handling related fixes" into 1.24
requested to merge gstreamer-backport-bot/gstreamer:mr-6692-backport-into-1.24-d3d12sink-event-handle into 1.24
Backport of !6692 (merged) "d3d12videosink: HWND event handling related fixes".
Commits: