Add allowlisted DeviceConfig flag for ActivityManagerNotifyMediaFGSTYpeTest

Flag: com.android.media.flags.enable_notifying_activity_manager_with_media_session_status_change
BUG: 281762171
Test: atest cts/tests/app/src/android/app/cts/ActivityManagerNotifyMediaFGSTypeTest.java

Change-Id: Ifa24a6218133ac54d1e3eacbaa44775aba16e596
Signed-off-by: Pradeep Sawlani <sawlani@google.com>
diff --git a/framework/java/android/provider/WritableFlags.java b/framework/java/android/provider/WritableFlags.java
index 3272120..6f989c2 100644
--- a/framework/java/android/provider/WritableFlags.java
+++ b/framework/java/android/provider/WritableFlags.java
@@ -1394,6 +1394,7 @@
                 "media_tv/android.media.tv.flags.enable_ad_service_fw",
                 "media_tv/android.media.tv.flags.tiaf_v_apis",
                 "media/media_metrics_mode",
+                "media/media_session_temp_user_engaged_duration_ms",
                 "media/player_metrics_app_allowlist",
                 "media/player_metrics_app_blocklist",
                 "media/player_metrics_per_app_attribution_allowlist",