Added URI for selecting distinct phone numbers from AnnotatedCallLog.

This will be used in the PhoneLookupDataSource. A separate URI is necessary because the content provider APIs do not provide a mechanism for querying using the "distinct" keyword.

Bug: 34672501
Test: unit
PiperOrigin-RevId: 175706603
Change-Id: Ia455a18d10afb116d26f69e8b0c7493f4f877d0b