Adjusting the pixel tolerance for the following test: compositing/backgrounds/fixed-background-on-descendant.html
<rdar://problem/103537075>
Pull request: https://github.com/WebKit/WebKit/pull/13440
Committed 263675@main (82faeb56882c): <https://commits.webkit.org/263675@main> Reviewed commits have been landed. Closing PR #13440 and removing active labels.