[flexiglass] Re-enable CentralSurfacesImplTests

Disabled test for setting the statusBarStateController
state permanently for flexiglass and verified that all
other tests are passing with flexiglass enabled.

Bug: 427066068
Test: CentralSurfacesImplTests with flexiglass enabled,
see presubmit run on patchset 2
Flag: com.android.systemui.scene_container

Change-Id: I8fb085d63e65f8a349432aff0b792beb9fa07e30