[Settings] Stop network mode query when changing config

Changing the configuration of network mode could take a long time.
In some cases, it blocks the query operation.
This is a change to stop query operation from execution during the time
when configuration is changing.

Bug: 227431634
Test: local
Change-Id: Ifeb16e7e9a0ec3de970fe588a1cce6d31fbba9cd
3 files changed