Revert^2 "[SB][Notifs] status_bar_ron_chips flag -> status_bar_not..."

This reverts commit fd39d2a3b0992b16b99955f7612c69e59e0fb283.

Reason for revert: Metrics show the original CL was *not* cause for performance regression b/374191659
Bug: 374191659

Original CL description:
Removes "RON" from the flag name and instead makes the flag name more
generic.

Also updates all the "demo RON" code to be "demo notification" instead.

Bug: 364653005
Flag: com.android.systemui.status_bar_notification_chips
Test: all tests under statusbar package

Change-Id: I5b989106d2fcdaa522accf3d51459e8107766112
diff --git a/packages/SystemUI/aconfig/systemui.aconfig b/packages/SystemUI/aconfig/systemui.aconfig
index 4e181e3..2278789 100644
--- a/packages/SystemUI/aconfig/systemui.aconfig
+++ b/packages/SystemUI/aconfig/systemui.aconfig
@@ -421,9 +421,9 @@
 }
 
 flag {
-    name: "status_bar_ron_chips"
+    name: "status_bar_notification_chips"
     namespace: "systemui"
-    description: "Show rich ongoing notifications as chips in the status bar"
+    description: "Show promoted ongoing notifications as chips in the status bar"
     bug: "361346412"
 }