Set network type to ro.telephony.default_network if hiding preferred network type

Since pref is being hidden from user, set network mode to default
in case it is currently something else. That is possible if user
changed the setting while roaming and is now back to home network.

Bug: 25012603
Change-Id: I2bdf92a3c62a2d2e995f74285a77b33be70cd82f
1 file changed