This is causing issues where the userHandle is actually null. This is allowed by the WebAuthn spec: https://www.w3.org/TR/webauthn-2/#dom-authenticatorassertionresponse-userhandle
rdar://89275844
Created attachment 452882 [details] Patch
Created attachment 452901 [details] Patch
rdar://89317740
Created attachment 452904 [details] Patch
Comment on attachment 452904 [details] Patch r=me
Committed r290381 (247696@main): <https://commits.webkit.org/247696@main> All reviewed patches have been landed. Closing bug and clearing flags on attachment 452904 [details].