Hook up the storage item preferences to actual data.

This uses the same storage query implementation as the previous
iteration of the Storage Settings. In b/32206268, a new API for
querying this information will be added for querying this info.

Once the new API has landed, a future patch will swap out the
impl, but this should work for today.

Bug: 33199077
Test: Settings Robo Tests
Change-Id: I58763e8ee38aabbea533bc614268288e854ff8d4