Fixed the data switch issue

Fixed the network detached and re-attached to a new data network
needs to be handled properly.

Fix: 380370027
Test: atest DataNetworkTest
Test: Basic telephony functionality tests
Test: DDS on SIM 1, make call on SIM 2, hang up call, repeat
Flag: EXEMPT bug fix
Change-Id: I35a2f1c7ab548734b11df38c3e1a1bf3105eb896