If deviceEntryIconView isn't visible, clickable=false

In general, the device entry icon view should still be clickable
for switch access users when it is visible.

Bug: 341916203
Flag: EXEMPT bugfix
Test: on a UDFPS device, swipe down on the home screen
in the UDFPS icon area. Notice that the notification
shade can expand from this location.

Change-Id: I151b989dde4f585f2c429c3436bb7307feb58234