Fix failing tests: elementhandle-eval-on-selector.spec.ts (headful)

## Test Expectation

- **Pattern:** `[elementhandle-eval-on-selector.spec.ts] *`
- **Platforms:** all (darwin, linux, win32)
- **Browsers:** all
- **Mode:** headful only
- **Status:** FAIL

All tests in `elementhandle-eval-on-selector.spec.ts` timeout in headful CI mode but pass in headless.