Move the place we call +[AVCaptureDevice ensureServerConnection] so it is called when capturing audio or video.
rdar://97391073
Pull request: https://github.com/WebKit/WebKit/pull/3223
Committed 253570@main (4fcb3683e6a4): <https://commits.webkit.org/253570@main> Reviewed commits have been landed. Closing PR #3223 and removing active labels.