[Settings] Avoid SIM toggle switch loopback

API provided by SwitchBar widget would lead to callback when
SIM toggle switch operation failure and set UI back.
However, set UI back (rollback the UI) would lead to another
trigger to SIM toggle switch. This would generate endless
events and keep system budy.

To avoid from this callback, a check need to be done prior to UI
take action. Therefore, changing APIs to fit into this concept.

Bug: 155770954
Test: make RunSettingsRoboTests -j ROBOTEST_FILTER=MobileNetworkSwitchControllerTest
Change-Id: Iaea1012acdbe449a882ced08b596c64b9f99256f