Improve support for required changes for ews uat instance. Currently we keep various local changes on uat instance (which are different from production instance as well as from a local testing instance). It's better to integrate them properly and commit them to the repository.
PR: https://github.com/WebKit/WebKit/pull/77
Landed https://commits.webkit.org/246188@main (51a6d90)!
<rdar://problem/87785476>