MM-27918 In-Product notices support (#15316)

api4/apitestlib.go

@@ -84,6 +84,8 @@ func setupTestHelper(dbStore store.Store, searchEngine *searchengine.Broker, ent
 	*config.PluginSettings.ClientDirectory = filepath.Join(tempWorkspace, "webapp")
 	config.ServiceSettings.EnableLocalMode = model.NewBool(true)
 	*config.ServiceSettings.LocalModeSocketLocation = filepath.Join(tempWorkspace, "mattermost_local.sock")
+	*config.AnnouncementSettings.AdminNoticesEnabled = false
+	*config.AnnouncementSettings.UserNoticesEnabled = false
 	if updateConfig != nil {
 		updateConfig(config)
 	}