Support disable extend Fingerprint Settings

1. Disable extend fingerprint settings when all fingerprints removed
2. Refine FingerprintUnlockCategoryController logic to better determine
   available status

Bug: 394550555
Flag: EXEMPT support interface, flag only used in impl part
Test: atest FingerprintSettingsFragmentTest
Change-Id: I8904e5f6d8f475ad63540eaef913407d7c0cf4ad