Show previous tab after phone call in phone search

Previously we've shown calllog when users called from
phone search screen. Now this change navigates users to
each tab (phone, calllog, favorite) when phone is made
from phone search.

TESTED:
incoming calls
  -> go back to calllog

outgoing calls
- make a phone call from dialpad -> go back to dialpad
- make a phone call from favorite -> go back to favorite
- make a phone call from calllog -> go to calllog
- make a phone call from call detail -> go to calllog
- make a phone call from People UI -> go to calllog
- make a phone call from dialpad and launch Phone UI
  again during the phone call -> go to dialpad
  (previous commit log says "go to calllog", but it looks
   wrong)
- make a phone call from contact card (reached via
  phone favorite) -> go to calllog
- make a phone call from dialpad or favorite, bail out the
  in-call UI. Have the recipient hang up the call.
  Then have an incoming call again. Hang up the second phone
  call.
  -> go to calllog

(new)
- make a phone call from search UI launched from dialpad
  -> go to dialpad
- make a phone call from search UI launched from favorite
  -> go to favorite

Bug: 5360106
Change-Id: I58f0e7160896bed5eae7d2bd8c7739712d6c681c