Query isEmergencySmsMode API when checking if emergency for GPS

When location SUPL request comes in for GPS NI handler,
also check emergency SMS mode in telephony, which
is true for a carrier defined amount of time after an
emergency SMS is sent.

Bug: 126091115
Test: manual - send fake emergency sms, check api is true.
Change-Id: I34d26d2940af5b0c412e20ce3668344da8656339