Fix: test form: update the callback when the task changes

Author: matt-aitken

apps/webapp/app/routes/_app.orgs.$organizationSlug.projects.v3.$projectParam.test.tasks.$taskParam/route.tsx

@@ -204,7 +204,7 @@ function StandardTaskForm({ task, runs }: { task: TestTask["task"]; runs: Standa
       );
       e.preventDefault();
     },
-    [currentPayloadJson, currentMetadataJson]
+    [currentPayloadJson, currentMetadataJson, task]
   );
 
   const [form, { environmentId, payload }] = useForm({