Fix typescript error

Summary: It errors on [github actions](https://github.com/facebook/flipper/actions/runs/11956118342/job/33330114098#step:7:59) but not internally 0_o

Reviewed By: lblasa

Differential Revision: D66362868

fbshipit-source-id: c039bb4db1db6aeec4d08bdf45715fe0a7c82bc2

Author: antonk52

desktop/plugins/public/network/__tests__/datastorage.node.tsx

@@ -43,7 +43,7 @@ test('DataSource handles updates', () => {
     key: 'id',
     indices: [['method'], ['status']],
   });
-  const customColumns = [];
+  const customColumns: Parameters<typeof createRequestFromRequestInfo>[1] = [];
 
   requests.upsert(createRequestFromRequestInfo(firstRequest, customColumns));
   requests.upsert(createRequestFromRequestInfo(secondRequest, customColumns));