Show the footer when global switch is off.

In the original implementation we showed a footer when global switch is off,
however, this was broken due to some refactor. This patch fixes the issue where
we don't set the visibility of the footer when global switch is on/off.

Bug: b/148626177
Test: make RunSettingsRoboTests ROBOTEST_FILTER=GraphicsDriver
Change-Id: I0f0763ee1551199cc8611c650350a2adbdf402ed