Fixed invalid pdu issue

The device may receive invalid sms pdu, i.e the pdu contins sms header
with an invalid seqNumber. This caused InboundSmsHandler crashed constantly.
This CL added the range check for the seqNumber to ensure the
InboundSmsHandler will not crash even if the seqNumber is invalid.

Test: runtest -x GsmInboundSmsHandlerTest -m
testMultiPartSmsWithInvalidSeqNumber
Bug: 72298611

Change-Id: Icf291c8530abdc2a528c5cf227cf00135281b899