Migrate ENABLE_HOME_TRANSITION_LISTENER to launcher.aconfig

Also set flag to TEAMFOOD.

Flag: ACONFIG ENABLE_HOME_TRANSITION_LISTENER TEAMFOOD
Bug: 306053414
Test: manual
Change-Id: Icf3947e61fa9f20f5b6e5ca2af96e693b55d3edc
diff --git a/aconfig/launcher.aconfig b/aconfig/launcher.aconfig
index 7c6d7a8..ace2210 100644
--- a/aconfig/launcher.aconfig
+++ b/aconfig/launcher.aconfig
@@ -48,3 +48,10 @@
     description: "Enables taskbar with no recreation from lifecycle changes of TaskbarActivityContext."
     bug: "299193589"
 }
+
+flag {
+    name: "enable_home_transition_listener"
+    namespace: "launcher"
+    description: "Enables launcher to listen to all transitions that include home activity"
+    bug: "306053414"
+}