Contact added to the "To" field of the Messaging app is not getting deleted

Bug 6435466

If you have a chip representing a phone number with the area code in parens
with a space (i.e.: "(425) 234-4322"), the chip would get committed when
the user was deleting chars and hit the space char. Ignore the special
email handling code for this case when in phone number mode.

Change-Id: I998e273a88b9f30b651dedb41a39b7d37794be97