Fixed regression with search not reacting properly to on touch events.

There are a few interesting UX niceties that we support in search:
 1) When in regular search with an empty query, close the UI if the user
    touches the blank space.
 2) When in regular search with a non-empty query, hide the keyboard if the
    user touches the the list so they can see all results.
 2) When in dialpad search with an empty query, close the UI if the user
    touches the blank space.
 3) When in dialpad search with a non-empty query, hide the dialpad so the user
    can see the full list of results.

This change also adds logic to transfer the dialpad query to the search bar.

Bug: 64655802
Test: MainActivityIntegrationTest
PiperOrigin-RevId: 182434126
Change-Id: Iabb73b0018fa20e2811010a73a35d3aa3b35343b