Show side fps hint on large screen bouncer

This adds an hint regarding the possibility to unlock with the fingerprint while on bouncer, only when sided bouncer is enabled (so only on large screens). The hint is visible while the sensor is running.

Bug: 226610828
Test: atest KeyguardSecurityContainerControllerTest
Change-Id: I961ae6fe67e92620e955a5e297052e255fddd80d