Adding is_emergency field into the incoming_sms

Carrier statellite can send or recv message SOS message.
outgoing_sms already has is_emergency field but there was no
such a field in the incoming_sms.

Bug: 344929469
Test: Carrier satellite test
for the incoming sms, there was no is_emergency field.

Change-Id: If0a670f6a8c0b0cdde0d035c86b1654883390f58