Internally, we don't allow back deployment (targeting an older OS than what an SDK was built for), but should be safe to do in public Xcode.
Pull request: https://github.com/WebKit/WebKit/pull/10549
Committed 260719@main (8dbd7e57ce02): <https://commits.webkit.org/260719@main> Reviewed commits have been landed. Closing PR #10549 and removing active labels.
<rdar://problem/105812206>
Re-opened since this is blocked by bug 252875
Pull request: https://github.com/WebKit/WebKit/pull/13885