Format phone numbers when inserting a new contact

Set formatAfterWatcherSet to true when inserting a new contact.

Test:
Tested opening and closing a contact with an unformatted number
doesn't prompt to discard changes.
Tested adding a new contact from Allo has formatted number.

Bug: 26754145
Change-Id: I82546e86aec1e901e9b508eeaf7b87cf9f28d22f