fireEvent + graflow uses new-style fireEvent

graflow_examples/test5.html

@@ -53,10 +53,10 @@
         <script>
             window.addEventListener('load',()=>{
                 let grflw1 = document.querySelector('bz-graflow.compunet')
-                grflw1.addEventListener('subflowLoaded',
+                grflw1.addEventListener('bz:graflow:subflowLoaded',
                     (evt) => { grflw1 = evt.detail.subflow }
                 )
-                grflw1.addEventListener('subflowExited',
+                grflw1.addEventListener('bz:graflow:subflowExited',
                     (evt) => { grflw1 = evt.target }
                 )
                 document.querySelector('[data-trigger="onAutoplace1H"]').addEventListener('click',