Fix test: LockscreenShadeTransitionControllerTest

This test is currently failing on foldable targets, as the resource
`lockscreen_shade_depth_controller_transition_distance` has the value 0,
and therefore the progress is never set on the depthController.

Test: Test passes
Fixes: 223167765
Change-Id: I543784eed4791c83202bc957978419b9b83f944f