[macOS] Do not attempt to create and restore "NSAutoresizingMaskLayoutConstraint" constraints when entering fullscreen
<rdar://problem/107387499>
Pull request: https://github.com/apple/WebKit/pull/642
Committed 265870.6@safari-7616-branch (9508936a5222): <https://commits.webkit.org/265870.6@safari-7616-branch> Reviewed commits have been landed. Closing PR #642 and removing active labels.