Validate width, height, x and y for I420 and NV12 video frames
<rdar://problem/101068854>
Pull request: https://github.com/WebKit/WebKit/pull/5282
Committed 255489@main (cc18bcb28839): <https://commits.webkit.org/255489@main> Reviewed commits have been landed. Closing PR #5282 and removing active labels.