Use phoneId instead of SimSlotIndex

The function hideEnhanced4gLteSettings incorrectly uses sim slot index
when retrieving an ImsManager, instead of the correct phoneId.

This means that hideEnhanced4gLteSettings might give wrong result if
phoneId and sim slot index does not match.

Bug: 109892145
Test: Manual
Change-Id: I27674f383cd6a23465c9c260ce2a64292ffc7bdf
1 file changed