Quick fix for notification scrim showing when swiping up the bouncer

This fix is disabling activating mQsExpandImmediate on lockscreen. This might be even long term fix as this callback is not activated on lockscreen when we actually want it to anyway - so it works on lockscreen but only when it's not desired.

Fixes: 228607886
Test: manual
Change-Id: Iaeee17391894f4e3a0bd617ca6b8133f0b9718e4