Add DISALLOW_CONFIG_MOBILE_NETWORKS restriction check to changing pin
(ChageIccPinScreen) and enabling/disabling (EnableIccPinScreen) pin screens.

The EditTexts, Buttons, and TextViews have been disabled so they can not be clicked and their alpha is set to 0.5f to visually indicate that they are disabled.

Test: manual
Bug: 281850678
Bug: 281849809
Change-Id: I7420c7c6cbe3244bf50067ce4c0e08fe06ee345c
2 files changed