[ews] Mark old commits on PRs as obsolete in Django app database
Pull request: https://github.com/WebKit/WebKit/pull/3370
Committed 253475@main (dfc6c1f1d4be): <https://commits.webkit.org/253475@main> Reviewed commits have been landed. Closing PR #3370 and removing active labels.
<rdar://problem/98744107>