[MM-16232] ID loaded push notifications (#13137)

* Update BuildPushNotificationMessage (#12974)

* Update BuildPushNotificationMessage

* Included Category, Version, and Type

* Remove unnecessary function args

* [MM-16232] Build and return fetched notification (#13085)

* Build and return fetched notification

* Remove check on PushNotificationContents

* Ran i18n-extract

* Get UserId from session

* Re-add ReturnStatusOK

* Remove UserId from PushNotificationAck

* Always include channel name

* [MM-16232] Return after writing response and add default message (#13127)

* Return after writing response and add default message

* Include channel ID as well

* Localize default message

* Fix i18n

app/notification_test.go

@@ -1274,7 +1274,7 @@ func TestPostNotificationGetChannelName(t *testing.T) {
 		},
 	} {
 		t.Run(name, func(t *testing.T) {
-			notification := &postNotification{
+			notification := &PostNotification{
 				channel:    testCase.channel,
 				sender:     sender,
 				profileMap: profileMap,
@@ -1359,7 +1359,7 @@ func TestPostNotificationGetSenderName(t *testing.T) {
 				post = testCase.post
 			}
 
-			notification := &postNotification{
+			notification := &PostNotification{
 				channel: channel,
 				post:    post,
 				sender:  sender,