[Provider Model] Add cutout for signal icon if the mobile data is disabled

Bug: 198233143
Test: manual, atest ProviderModelSliceHelperTest and SubscriptionsPreferenceControllerTest
Change-Id: I8714c9ff4c0c3aa5bad51ad5d41207d50ccca8ef
Merged-In: I3caefc7e1ca10dadcad114273edf35d9309502e1
(cherry picked from commit 3f46c5f685447b750cbd8515fe12085a95739c84)
Merged-In:I8714c9ff4c0c3aa5bad51ad5d41207d50ccca8ef
4 files changed