When unlocking, show only "fingerprint unlocking" button if "Biometric Unlocking" option is enabled

[rigarash]

Is your feature request related to a problem? Please describe.

There are 2 unlocking button, one is for "Biometric Unlocking" (on the left) and usual unlocking with passwords (on the right) if "Biometric Unlocking" option is enabled. Showing 2 buttons on the screen is quite error-prone.

Describe the solution you'd like

Show just one "Biometric Unlocking" button for the first attempt, and show two buttons after the user canceled the "fingerprint unlocking" attempt, since "Biometric Unlocking" will be the first choice for most users with "Biometric Unlocking" option enabled.

Describe alternatives you've considered

There can be an option to choose between the current behavior and the proposed behavior.