Since we now handle most inline content with LFC, rename the legacy path as "legacy".
Created attachment 430238 [details] patch
Created attachment 430240 [details] patch
Committed r278305 (238342@main): <https://commits.webkit.org/238342@main> All reviewed patches have been landed. Closing bug and clearing flags on attachment 430240 [details].
<rdar://problem/78712741>