Fix BiometricPrompt can scroll / overflow on long text

1. Make title & subtitle in single line
2. Make prompt dialog can't grow than 3/4 display height
3. Make description view scrollable

BUG: 226643887
Test: 1. Download test app from bug 226643887
      2. Check prompt ui
Change-Id: Ib95d090729b1561a70a853b17a4e17cdcbb71fbd