visionOS: Text jumps by subpixel increments when repainting
<rdar://problem/109372324>
Pull request: https://github.com/WebKit/WebKit/pull/17703
Committed 268107@main (7eb6ed02a5ba): <https://commits.webkit.org/268107@main> Reviewed commits have been landed. Closing PR #17703 and removing active labels.