WKWebView's viewportMetaTagWidthWasExplicit and viewportMetaTagCameFromImageDocument come from the web process, so need to be reset on web process crash.
Pull request: https://github.com/WebKit/WebKit/pull/3369
Committed 253486@main (84f547237bc5): <https://commits.webkit.org/253486@main> Reviewed commits have been landed. Closing PR #3369 and removing active labels.
<rdar://problem/98749176>