[TP] Fix set clock id not working

Root cause is that the ViewModel's lifecycle should be with the
activity, but we accidentally make it as long as CustomizationSections
which is cached in the Injector that may outlive an activity.

Fixed by getting the view model in the section controller, which lives
with the activity lifecycle.

Test: tested that set clock id actually works
Bug: 281082328
Change-Id: I4a17434a170f3521c9d6b345792280defc254928