Add aconfig flag for async hybrid notification view inflation

Add an aconfig flag for the feature: Inflating hybrid notification view
from the background thread.

Bug: 288326013
Bug: 217799515
Test: adb shell device_config put systemui com.android.systemui.notification_async_hybrid_view_inflation true
Change-Id: Ie9e27388561e0a1d7bda8a4e69f48d3bf6557487
diff --git a/packages/SystemUI/aconfig/systemui.aconfig b/packages/SystemUI/aconfig/systemui.aconfig
index 211af90..0567528 100644
--- a/packages/SystemUI/aconfig/systemui.aconfig
+++ b/packages/SystemUI/aconfig/systemui.aconfig
@@ -31,6 +31,13 @@
 }
 
 flag {
+    name: "notification_async_hybrid_view_inflation"
+    namespace: "systemui"
+    description: "Inflates the hybrid (single-line) notification views form the background thread."
+    bug: "217799515"
+}
+
+flag {
     name: "scene_container"
     namespace: "systemui"
     description: "Enables the scene container framework go/flexiglass."