Add taskbar_overflow flag to launcher.aconfig

Bug: 368119679
Test: EXEMPT just adding flag
Flag: com.android.launcher3.taskbar_overflow
Change-Id: Iba02590cab8be7b4834cdbb0464bbe37e2828f79
diff --git a/aconfig/launcher.aconfig b/aconfig/launcher.aconfig
index 9c92655..4d6c7ab 100644
--- a/aconfig/launcher.aconfig
+++ b/aconfig/launcher.aconfig
@@ -418,4 +418,11 @@
     namespace: "launcher"
     description: "Support changing quiet mode for user profiles in taskbar."
     bug: "345760034"
-}
\ No newline at end of file
+}
+
+flag {
+    name: "taskbar_overflow"
+    namespace: "launcher"
+    description: "Show recent apps in the taskbar overflow."
+    bug: "368119679"
+}