Change the sAsyncNotificationManager cached flag's defaultValueInTests

Change the sAsyncNotificationManager cached flag's defaultValueInTests,
so that it matches the value in fieldtrial_testing_config.json.

Bug: 380113169
Change-Id: I42593b32b074b8fe0545ac942f80b6009919bd39
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6099489
Code-Coverage: findit-for-me@appspot.gserviceaccount.com <findit-for-me@appspot.gserviceaccount.com>
Commit-Queue: Martin Kong <martinkong@google.com>
Reviewed-by: Min Qin <qinmin@chromium.org>
Reviewed-by: Henrique Nakashima <hnakashima@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1397432}
diff --git a/chrome/android/javatests/src/org/chromium/chrome/browser/app/flags/ChromeCachedFlagsTest.java b/chrome/android/javatests/src/org/chromium/chrome/browser/app/flags/ChromeCachedFlagsTest.java
index 223241a..4783b93 100644
--- a/chrome/android/javatests/src/org/chromium/chrome/browser/app/flags/ChromeCachedFlagsTest.java
+++ b/chrome/android/javatests/src/org/chromium/chrome/browser/app/flags/ChromeCachedFlagsTest.java
@@ -53,7 +53,6 @@
     private static final Set<CachedFlag> BASELINE =
             Set.of(
                     ChromeFeatureList.sAndroidAppIntegration,
-                    ChromeFeatureList.sAsyncNotificationManager,
                     ChromeFeatureList.sCctFeatureUsage,
                     ChromeFeatureList.sCctGoogleBottomBar,
                     ChromeFeatureList.sCollectAndroidFrameTimelineMetrics,
diff --git a/chrome/browser/flags/android/java/src/org/chromium/chrome/browser/flags/ChromeFeatureList.java b/chrome/browser/flags/android/java/src/org/chromium/chrome/browser/flags/ChromeFeatureList.java
index 7f599e5..a7a1e8b4 100644
--- a/chrome/browser/flags/android/java/src/org/chromium/chrome/browser/flags/ChromeFeatureList.java
+++ b/chrome/browser/flags/android/java/src/org/chromium/chrome/browser/flags/ChromeFeatureList.java
@@ -603,7 +603,7 @@
             newCachedFlag(ANDROID_TAB_DECLUTTER_DEDUPE_TAB_IDS_KILL_SWITCH, true);
     public static final CachedFlag sAppSpecificHistory = newCachedFlag(APP_SPECIFIC_HISTORY, true);
     public static final CachedFlag sAsyncNotificationManager =
-            newCachedFlag(ASYNC_NOTIFICATION_MANAGER, false);
+            newCachedFlag(ASYNC_NOTIFICATION_MANAGER, false, true);
     public static final CachedFlag sBlockIntentsWhileLocked =
             newCachedFlag(BLOCK_INTENTS_WHILE_LOCKED, false);
     public static final CachedFlag sCctAuthTab = newCachedFlag(CCT_AUTH_TAB, true);