Focus on name field and show keyboard when inserting contact

Request name field focus when it's an insert.

Test: Manually verified:
  * Inserting new contact with fab has keyboard and focus on name
    field
  * Inserting new contact from messenger app has keyboard and
    focus on name field with phone number filled in
  * Editing a contact has nothing focused
  * Editing a read-only contact has the name field focused but no
    keyboard

Bug: 31158231
Change-Id: Iff7e0df5059f5efa038d5f794065f76e38a21288