Support feature context in TelephonyManager

...Managers are supposed to use the passed in context to support e.g.
alternate user or package contexts. Not sure why this is not the case
for TelephonyManager.

Hence special case the support for feature-contexts.

Test: atest CtsAppOpsTestCases:android.app.appops.cts.AppOpsLoggingTest#getCellInfo
Bug: 136595429
Change-Id: I7f498e282a34e39da6a1f6c129eff09674dce795