Allow sending null initial attach data profile to modem

Controlled by a allow_clear_initial_attach_data_profile, modem implemented b/227579876 to allow framework clear initial attach data profile by sending null.

Fix: 278702856
Fix: 237444788
Test: voice call + internet browsing + reporter verified
Test: daily test verified on both P22 and P23 by b/283239810 and confirmed by log
Test: daily test related to hot swapping SIM and phone call on Barbet

Change-Id: I77217c7568ee854f145781a4fe7913b608d99681