Build list items first and then notify data set changed

Bug: 35313285

Test: ran the following command 10 times and verified the
      crash didn't happen. Before the CL, usually there are 2-3 times
      of crash out of 10 attempts.

adb shell monkey -p
com.google.android.contacts --ignore-security-exceptions
--monitor-native-crashes -s 493 -v -v -v 125000

Change-Id: Ic2ab30c55e9c6eb729f163b0ed11174f6f6340d4