Add return animations to Toast search results.

This only applies to targets that already use the Animation library for
launch animations.

Bug: 336719605
Bug: 298089923
Flag: com.android.launcher3.enable_container_return_animations
Flag: com.android.systemui.shared.return_animation_framework_library
Test: tested manually with flag on and off
Change-Id: Ib824e78fa8b1b226b32d23d8325f06b496ba5deb