[Bug] [1P8] Duplicate logins saved

Thanks for reporting this nukmicah! It seems like we're not correctly discarding the new item when you choose discard changes from the Autofill create new item flow. I'm able to reproduce this issue on my end, so we should be able to dig in and find the root cause.

Also, although it has nothing to do with the bug, I'll mention the "username" field label is just a guideline. If you want 1Password to fill in your email address in a sign-in form, you'll want to put your email address in the username field. We should maybe label that field differently to avoid confusion, although "username/email" seems a bit unwieldy.