Search now supports alternative sort and display orders for contact names.

This means that names like "Bob Dylan" can be displayed as "Dylan, Bob" and
the names are now able to be sorted by last name as well.

This change also adds content descriptions to search icon for a11y.

Bug: 68293751
Test: NewSearchFragmentTest
PiperOrigin-RevId: 176382228
Change-Id: Ia890ad20e9e484fa9c4622c4b899b33f5b6e3990