[WKWebView _loadServiceWorkerURL] ends up lowercasing URL host. While I don't think it is technically wrong (hosts should not be case-sensitive), it can be confusing.
Created attachment 441220 [details] Patch
Committed r284183 (243000@main): <https://commits.webkit.org/243000@main> All reviewed patches have been landed. Closing bug and clearing flags on attachment 441220 [details].
<rdar://problem/84266830>