This reverts commit a555f4ca1b, and relands commit 9420ba7515.
- attachAlpha should only be reset in onRecycle, otherwise applyLoadPlan or moveRunningTaskToFront will unexpectedly reset it via resetViewTransforms. This fixes TaplTestsQuickstep.testQuickSwitchFromApp which assert all visible task must be on the left hand side of the screen during swipe up
Fix: 353950224
Change-Id: If1c1524e435c8007844bcd51d8695a6d3b00450b
Alex Chau
ca7df57c08