Enforce MODIFY_PHONE_STATE or CarrierPrivilege permission for TelephonyManager#setForbiddenPlmns() API

The API documentation and actual implementation mismatches. This CL
fixes the actual implementation as per API expectation.

Bug: 202760015
Test: telephony tests
Change-Id: Ie1d08e65049a6198c10db5d267a001acbdabc145
1 file changed