PLT-7508: Add settings to disable wide mention confirmation (#7416)

utils/config.go

@@ -509,6 +509,7 @@ func getClientConfig(c *model.Config) map[string]string {
 	props["EnableWebrtc"] = strconv.FormatBool(*c.WebrtcSettings.Enable)
 
 	props["MaxNotificationsPerChannel"] = strconv.FormatInt(*c.TeamSettings.MaxNotificationsPerChannel, 10)
+	props["EnableConfirmNotificationsToChannel"] = strconv.FormatBool(*c.TeamSettings.EnableConfirmNotificationsToChannel)
 	props["TimeBetweenUserTypingUpdatesMilliseconds"] = strconv.FormatInt(*c.ServiceSettings.TimeBetweenUserTypingUpdatesMilliseconds, 10)
 	props["EnableUserTypingMessages"] = strconv.FormatBool(*c.ServiceSettings.EnableUserTypingMessages)
 	props["EnableChannelViewedMessages"] = strconv.FormatBool(*c.ServiceSettings.EnableChannelViewedMessages)