fix: update webhook trigger's code example and custom UI on auth change (#3135)

## Description
fixes #2995

This makes the webhook trigger settings sidebar render its custom UI
using the current form configuration rather than the saved node config.
As a result, the auth method, code example, and reset token/signature
controls update immediately when the user changes the Authentication
dropdown, without requiring a canvas save.

## Before

[before-dynamic-update.webm](https://github.com/user-attachments/assets/f6e20012-6c5e-4460-8aab-5871f73abf8f)

---
## After

[after-dynamic-update.webm](https://github.com/user-attachments/assets/25774038-f012-45fa-8bd8-ed9b3550b253)

---------

Signed-off-by: devroy10 <[email protected]>

Author: devroy10

web_src/src/pages/workflowv2/index.tsx

@@ -2829,8 +2829,17 @@ export function WorkflowPageV2() {
       } = onRun ? { onRun } : {};
       if (integration) context.integration = integration;
 
-      return () => {
-        return renderer.render(buildNodeInfo(node), Object.keys(context).length > 0 ? context : undefined);
+      // Return a function that takes the current configuration
+      return (configuration?: Record<string, unknown>) => {
+        const nodeWithConfiguration = {
+          ...node,
+          configuration: configuration ?? node.configuration,
+        };
+
+        return renderer.render(
+          buildNodeInfo(nodeWithConfiguration),
+          Object.keys(context).length > 0 ? context : undefined,
+        );
       };
     },
     [canvas],