Right now, MiniBrowser does not support pointer lock since it doesn't provide an implementation for the `_webViewDidRequestPointerLock` client delegate. We should implement this and the `_webViewDidLosePointerLock` in a way that displays a banner informing the user about their pointer (and how to exit out of the pointer lock state), such that MiniBrowser will support pointer lock.
<rdar://problem/117562146>
Pull request: https://github.com/WebKit/WebKit/pull/19617
Committed 269854@main (8ce6e671f9d0): <https://commits.webkit.org/269854@main> Reviewed commits have been landed. Closing PR #19617 and removing active labels.