TV: Fix launch for "Deny Anyway" permission dialog

Previously the dialog was not showing up at all and the parent was
dismissing itself. We can't use getChildFragmentManager() for this and
need to set the parent view as a target fragment instead.

We exit the permission setting sub-screen once we get the state change
callback, either from feedback loop on the model or indirectly from the
dialog changing something.

If there is no change, we stay on the same screen.

Test: atest android.permission3.cts
Test: atest android.permission2.cts
Test: atest android.permission.cts
Test: atest android.os.cts.AutoRevokeTest
Bug: 155356284
Change-Id: I3af8f2a6eb4cd85447684c5930249c93a5c84d1e