[MM-57070] Remove detailed_error from errors when not in dev mode (#26414)

* remove detailed error from appErr.ToJSON

* Revert "remove detailed error from appErr.ToJSON"

This reverts commit 3c2fa7352d7a3bc7216b8e073179161779169d4b.

* use WipeDetailed instead of err.DetailedError = ""

* fix tests

---------

Co-authored-by: Mattermost Build <build@mattermost.com>

server/channels/web/handlers.go

@@ -394,14 +394,14 @@ func (h Handler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 
 		// Block out detailed error when not in developer mode
 		if !*c.App.Config().ServiceSettings.EnableDeveloper {
-			c.Err.DetailedError = ""
+			c.Err.WipeDetailed()
 		}
 
 		// Sanitize all 5xx error messages in hardened mode
 		if *c.App.Config().ServiceSettings.ExperimentalEnableHardenedMode && c.Err.StatusCode >= 500 {
 			c.Err.Id = ""
 			c.Err.Message = "Internal Server Error"
-			c.Err.DetailedError = ""
+			c.Err.WipeDetailed()
 			c.Err.StatusCode = 500
 			c.Err.Where = ""
 			c.Err.IsOAuth = false