Fix TaplTestsQuickstep.testPressback failure (2)

Since anim is empty in the predictiveBack case, the animationEnd listener needs to be added to rectFSpringAnim instead

Bug: 318675970
Flag: ACONFIG com.android.systemui.predictive_back_system_animations STAGING
Test: TaplTestsQuickstep
Change-Id: Ibb3fd44c56b9d5370362f994762554eff02edbe6
1 file changed