The rename in 255664@main changed the string used to store the user decision about Lockdown Mode use. We should just continue to use the key until a proper API is created so we don't lose user state.
<rdar://102422729>
Pull request: https://github.com/WebKit/WebKit/pull/10054
Committed 260233@main (7b389848394a): <https://commits.webkit.org/260233@main> Reviewed commits have been landed. Closing PR #10054 and removing active labels.