Some NodeFlag describe the type while others describe the state of a Node. Split the flags into these two distinct categories.
Pull request: https://github.com/WebKit/WebKit/pull/22141
Committed 272399@main (21b412d91a63): <https://commits.webkit.org/272399@main> Reviewed commits have been landed. Closing PR #22141 and removing active labels.
<rdar://problem/119967924>