Change node id generation to give fixed length values without '.'

packages/node_modules/@node-red/util/lib/util.js

@@ -31,7 +31,11 @@ const util = require("util");
  * @memberof @node-red/util_util
  */
 function generateId() {
-    return (1+Math.random()*4294967295).toString(16);
+    var bytes = [];
+    for (var i=0;i<8;i++) {
+        bytes.push(Math.round(0xff*Math.random()).toString(16).padStart(2,'0'));
+    }
+    return bytes.join("");
 }
 
 /**