WebGL context loss does not work in workers
<rdar://problem/128854821>
Pull request: https://github.com/WebKit/WebKit/pull/29173
*** Bug 272843 has been marked as a duplicate of this bug. ***
Committed 279694@main (b9db2e5afd58): <https://commits.webkit.org/279694@main> Reviewed commits have been landed. Closing PR #29173 and removing active labels.