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
diff --git a/aconfig/launcher.aconfig b/aconfig/launcher.aconfig
index f1f9966..15ac9e3 100644
--- a/aconfig/launcher.aconfig
+++ b/aconfig/launcher.aconfig
@@ -311,6 +311,13 @@
 }
 
 flag {
+    name: "enable_container_return_animations"
+    namespace: "launcher"
+    description: "Enables the container return animation mirroring launches."
+    bug: "341017746"
+}
+
+flag {
     name: "floating_search_bar"
     namespace: "launcher"
     description: "Search bar persists at the bottom of the screen across Launcher states"