[SB][Notifs] status_bar_ron_chips flag -> status_bar_notification_chips.

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: I9174b97369917c33b0dde35a4ff99fb12729df8a
diff --git a/packages/SystemUI/aconfig/systemui.aconfig b/packages/SystemUI/aconfig/systemui.aconfig
index a21a805..0138b5c 100644
--- a/packages/SystemUI/aconfig/systemui.aconfig
+++ b/packages/SystemUI/aconfig/systemui.aconfig
@@ -395,9 +395,9 @@
 }
 
 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"
 }