Add a done button to vision setting pages in setup flow

Root cause: User feels confused because the particular screen doesn't have a back button but at that moment of the setup flow the regular UI gestures didn't even work.
Solution: Add a done button to the vision settings pages for clearer navigation.

Bug: 262995569
Test: make RunSettingsRoboTests ROBOTEST_FILTER=FragmentForSetupWizardTest
Change-Id: Id3a0d78389e0e6c11b5b5cf016b37673fde7f286