Passkey overwritten in profile

[like-a-bause]

          I just tried the following:

• Run this PRs quickstart.
• Login with an email I already registered via passkey with a previous hanko version
• Add a passkey in the profile
• Delete the passkey I just created
• Logout
• Try to log in again -> fails
• When logging in again via passcode the "old" passkey is still shown there

Originally posted by @like-a-bause in https://github.com/teamhanko/hanko/issues/495#issuecomment-1401502020

[FlxMgdnz]

I think we could send an exclude list with all existing passkeys, but then we'd have to handle the resulting error appropriately.

Maybe @FreddyDevelop or @lfleischmann can chime in with better ideas?!

[github-actions[bot]]

This issue is stale because it has been open for 30 days with no activity.