Ensure shortcodes beginning 40xx are free of charge as per ITU spec

https://www.itu.int/dms_pub/itu-t/oth/02/02/T020200006B0001PDFE.pdf

Change requested by WindTre, Vodafone for compliance with AGCOM.

Change-Id: I2e6e188bb3f19b6c673b77f1b8885940a2534e1d
BUG: 211727322
BUG: 213183041
TEST: new codes successfully pushed to device, 40400 does not show warning, 41000 does