Display SIM PIN immediately when inserted on unlocked lockscreen

When the user has swipe security or has authenticated with face
auth without bypass, insert a SIM. Previously, this reset the
keyguard which had the side effect of calling dismiss and going
to GONE.

On a call to dismiss(), check first whether any SIM screens
remain.

Fixes: 374660035
Test: atest KeyguardSecurityContainerControllerTest
Flag: EXEMPT bugfix
Change-Id: Ia3000dc806045b2a6b9ab3bec74e231395c5aa61