🐛 [Frontend] Fix: start dynamic services (#8224)

Author: odeimaiz

services/static-webserver/client/source/class/osparc/data/model/NodeStatus.js

@@ -27,18 +27,14 @@ qx.Class.define("osparc.data.model.NodeStatus", {
     this.base(arguments);
 
     this.setNode(node);
-
-    if (node.isDynamic()) {
-      const progressSequence = new osparc.data.model.NodeProgressSequence();
-      this.setProgressSequence(progressSequence);
-    }
   },
 
   properties: {
     node: {
       check: "osparc.data.model.Node",
       init: null,
-      nullable: false
+      nullable: false,
+      apply: "__applyNode",
     },
 
     progress: {
@@ -142,6 +138,21 @@ qx.Class.define("osparc.data.model.NodeStatus", {
   },
 
   members: {
+    __applyNode: function(node) {
+      const addNodeProgressSequence = () => {
+        if (node.isDynamic()) {
+          const progressSequence = new osparc.data.model.NodeProgressSequence();
+          this.setProgressSequence(progressSequence);
+        }
+      };
+
+      if (node.getMetadata()) {
+        addNodeProgressSequence();
+      } else {
+        node.addListenerOnce("changeMetadata", () => addNodeProgressSequence(), this);
+      }
+    },
+
     __transformProgress: function(value) {
       const oldP = this.getProgress();
       if (this.getNode().isFilePicker() && oldP === 100 && value !== 0 && value !== 100) {