Disable assisted dialing when the phone is User Locked.

Because the phone is one of the few applications that operate
when the phone is locked, disable the feature to avoid reading/writing
any encrypted preferences while the user is in the locked state.

I do not anticipate this being a necessary feature when
the device is locked.
Bug: 65399148
Test: unit test
PiperOrigin-RevId: 174044403
Change-Id: I1b9a2ac677ced2af06455a384bf169c417ffc1a5
1 file changed