Don't hide the alternate bouncer on keyguardReset

if hideBouncerWhenShowing=false

See CentralSurfacesImpl#setOccluded comment:
"If Keyguard is reshown, don't hide the bouncer as it
might just have been requested by a FLAG_DISMISS_KEYGUARD_ACTIVITY"

Fixes: 271457895
Test: atest StatusBarKeyguardViewManagerTest
Change-Id: Iaaeffc78036e0dd7b24236b3c105ae990f54d29f