MM-21150: Re-create the workers so that the EE workers are non-nil up… (#13523)

* MM-21150: Re-create the workers so that the EE workers are non-nil upon uploading a license.

* MM-21150: Updates from Srv field to method.

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

api4/license.go

@@ -98,6 +98,11 @@ func addLicense(c *Context, w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
+	if *c.App.Config().JobSettings.RunJobs {
+		c.App.Srv().Jobs.Workers = c.App.Srv().Jobs.InitWorkers()
+		c.App.Srv().Jobs.StartWorkers()
+	}
+
 	c.LogAudit("success")
 	w.Write([]byte(license.ToJson()))
 }