[MM-57826] Make sure the original errors are wrapped when AppErrors are returned (#26771)

Co-authored-by: Ibrahim Serdar Acikgoz <serdaracikgoz86@gmail.com>

server/channels/api4/remote_cluster.go

@@ -244,7 +244,7 @@ func remoteSetProfileImage(c *Context, w http.ResponseWriter, r *http.Request) {
 	}
 
 	if err := r.ParseMultipartForm(*c.App.Config().FileSettings.MaxFileSize); err != nil {
-		c.Err = model.NewAppError("remoteUploadProfileImage", "api.user.upload_profile_user.parse.app_error", nil, err.Error(), http.StatusInternalServerError)
+		c.Err = model.NewAppError("remoteUploadProfileImage", "api.user.upload_profile_user.parse.app_error", nil, "", http.StatusInternalServerError).Wrap(err)
 		return
 	}