Accoding to MSDL specs, the bouncer emergency button delivers keypress

haptics.

The keypress return MSDL token is delivered when pressing the emergency
button of the bouncer.

Test: atest EmergencyButtonControllerTest
Flag: com.android.systemui.msdl_feedback
Bug: 361321945
Change-Id: I5616963ea85d84ac3bf3b3483ec6d8da716c7102