Show pointer_location for all users

Bug: 269556690
Test: Manual, enable pointer_location, switch to guest user, observe
pointer_location overlay is still visible. See bug for more info.

Change-Id: I0d87e34241e1450d5ea38ad6c564affa19209147
Merged-In: I0d87e34241e1450d5ea38ad6c564affa19209147