Don't auto format phone numbers when editor opens

The new behavior was introduced in ag/856515 to fix b/26754145

This causes contacts with phone numbers that do not have
the standard formatting to show as changed when the editor
is opened as then closed even when the user makes no edits.

Bug 26754145
Bug 27247065

Change-Id: I9ff8443844dd5d419df5c50e3664b382edbec045