MM-28687:Handle empty returns with invalid certificates (#15564)

* add error message for certificate auth issues

* remove hanging '-' if not necessary

* fix linter

* update text, per ux review

Co-authored-by: Mattermod <mattermod@users.noreply.github.com>

i18n/en.json

@@ -5806,6 +5806,10 @@
     "id": "ent.ldap.do_login.x509.app_error",
     "translation": "Error creating key pair"
   },
+  {
+    "id": "ent.ldap.no.users.checkcertificate",
+    "translation": "No LDAP users found, check your user filter and certificates."
+  },
   {
     "id": "ent.ldap.save_user.email_exists.ldap_app_error",
     "translation": "This account does not use AD/LDAP authentication. Please sign in using email and password."

jobs/jobs.go

@@ -101,8 +101,10 @@ func (srv *JobServer) SetJobError(job *model.Job, jobError *model.AppError) *mod
 	if job.Data == nil {
 		job.Data = make(map[string]string)
 	}
-	job.Data["error"] = jobError.Message + " — " + jobError.DetailedError
-
+	job.Data["error"] = jobError.Message
+	if len(jobError.DetailedError) > 0 {
+		job.Data["error"] += " — " + jobError.DetailedError
+	}
 	updated, err := srv.Store.Job().UpdateOptimistically(job, model.JOB_STATUS_IN_PROGRESS)
 	if err != nil {
 		return model.NewAppError("SetJobError", "app.job.update.app_error", nil, err.Error(), http.StatusInternalServerError)