CredentialManager "tap" exit leaves app in a bad state

[nbrr]

Steps, executed on a Samsung Galaxy S23 running Android 14:

• run CredentialManagerSample app, built from current main branch
• click "SIGN UP"
• enter a username and click "Sign Up with passkey"
• when the passkey creation dialog is open, tap outside the dialog
• the dialog is closed and the app is stuck with "operation in progress" and disabled buttons

When the dialog is exited with the cancel button, the app informs with a dialog that the user cancelled.