Add CTS test to ensure opt-in intent exists 1) Changes isUceSettingEnabled permission check to READ_PHONE_STATE, since it is public. 2) Adds test to ensure new intent resolves correctly. Bug: 111305845 Bug: 141951454 Test: atest CtsTelephonyTestCases Change-Id: Ie5a799de99b73d3d6855e1da6bd62e3cefb2291b