Fix JSON serialization in error handling

Replaced steps variable with userInput for JSON serialization in error handling. This ensures that the correct data is saved as a JSON blob when a network error occurs.

src/components/form/genericForm.tsx

@@ -25,7 +25,7 @@ const GenericForm = (formData: FormData) => {
                 body: JSON.stringify(e)
             })
             if (!response.ok) {
-                let json: string = JSON.stringify(steps);
+                let json: string = JSON.stringify(userInput);
                 const blob = new Blob([json], {type: "application/json"});
                 const url = URL.createObjectURL(blob);