Avoid from crash through exception handling.
Bug: 148803073
Test: m RunSettingsRoboTests -j
ROBOTEST_FILTER=WifiCallingSettingsForSubTest
Test: m RunSettingsRoboTests -j
ROBOTEST_FILTER=WifiCallingPreferenceControllerTest
Test: m RunSettingsRoboTests -j
ROBOTEST_FILTER=WifiCallingSettingsTest
Test: m RunSettingsRoboTests -j
ROBOTEST_FILTER=WifiCallingSliceHelperTest
Change-Id: I10aff50b6f3fc50b2f336ee320740f9f4a81e256
1. Code refactor
2. Apply ImsQueryProvisioningStat class to WFC's use case
Bug: 140542283
Test: m RunSettingsRoboTests -j ROBOTEST_FILTER=WifiCallingPreferenceControllerTest
Change-Id: I8a09264f83b9fc4fce3f79ec3aeb6ae757b004e4
1. Code refactor
2. Apply ImsQueryProvisioningStat class to VoLTE's use case
Bug: 140542283
Test: m RunSettingsRoboTests -j ROBOTEST_FILTER=Enhanced4gBasePreferenceControllerTest
Test: m RunSettingsRoboTests -j ROBOTEST_FILTER=Enhanced4gLteSliceHelperTest
Change-Id: Ie5a56e9b768b9abe88c635e4e5532d72c9ddd1a2
1. Code refactor
2. Add ImsQueryProvisioningStat class for VT's use case
Bug: 140542283
Test: m RunSettingsRoboTests -j ROBOTEST_FILTER=VideoCallingPreferenceControllerTest
Change-Id: I40ec5df00d02e71cb8ae78d4f81c71c5e354515a