test: remove legacy unknown assertion from path-action fixture

packages/client/ui-open-in-app/tests/open-path-action.client.spec.tsx

@@ -43,7 +43,7 @@ function bench(over: { desktop?: boolean | null; openPath?: Bench['openPath'] }
     applications: vi.fn(async () => []),
     openPath,
     t,
-  } as unknown as Bench['props']
+  } as Bench['props']
   return { props, desktop, loadDesktop, openPath }
 }