NetworkTypeController update on PCC changed for LTE/LTE+ switch

In legacy mode, PCC changed could update the cell bandwidths, changing
between LTE/LTE+. Update the overrideNetworkType on PCC changed to make
sure the state is accurate

Test: atest ServiceStateTrackerTest, NetworkTypeControllerTest
Fix: 185550402
Change-Id: If2a1e6215c0126988f214e2fa42d8102ac582621
Merged-In: If2a1e6215c0126988f214e2fa42d8102ac582621