Our "standard" xcodebuild options, as computed by `XcodeOptionString()` in webkitdirs, are not suitable for `xcodebuild installsrc`. In particular, they can lead to PIFCache directories being created in WebKitBuild that are created as a side effect of installsrc.
Pull request: https://github.com/WebKit/WebKit/pull/1877
rdar://95680722
Committed 252050@main (c68a647dbadb): <https://commits.webkit.org/252050@main> Reviewed commits have been landed. Closing PR #1877 and removing active labels.