small fix for value that are 0 .. and should be shown by the node-tree visualizer

Author: devhelpr

libs/web-flow-executor/src/nodes/node-tree-visualizer.ts

@@ -50,7 +50,8 @@ export const getNodeTreeVisualizer = (
       const nodeClass = payload?.nodeClass ?? '';
       let data = `${label}${(payload?.data ?? '-').toString()}`;
       if (
-        !payload?.data ||
+        payload?.data === undefined ||
+        payload?.data === null ||
         (Array.isArray(payload?.data) && !payload?.data.length)
       ) {
         data = '-';

libs/web-flow-executor/src/nodes/send-node-to-node-tree.ts

@@ -92,7 +92,7 @@ export const sendNodeToNodeTree: NodeTaskFactory<NodeInfo> = (
               payloadForExpression,
               false,
               info.payloadProperties
-            ) || '-';
+            ) ?? '-';
         }
       }
       //console.log('commandHandlerName', commandHandlerName, input);