Don't share elements when the shared animation is disabled

This CL ensures that we share elements between overlays and the current
scene during a Transition.ReplaceOverlay only if the shared element
transition of this element has not been disabled

Bug: 353679003
Test: atest OverlayTest
Flag: com.android.systemui.scene_container
Change-Id: I575769cfe424f9a95f2d8464795bf23b583c4cd0