Show mobile data icon with carrier Wi-Fi level in Quick-Settings

- If carrier Wi-Fi is active then use carrier Wi-Fi level instead of
  mobile data level.

- If carrier Wi-Fi level is less than min-level, use min-level instead.

Bug: 222885558
Test: manual test
atest -c InternetDialogControllerTest

Change-Id: If8d2871e61396dd8eb3ebab5eda0906d46a06c33