Created by: luktom
Please see #30510 for details. Two new unit tests added. "npm run test" was finished without errors.
It was needed to add following fix from v4: #28912. After this cyclomatic complexity of dataApiKeydownHandler was higher than allowed in your ESLint configuration, so I extracted _isDropDownCommand method.
Additionally I fix some by catch error of variables assignment in "should ignore keyboard events for s and s within dropdown-menu, except for escape key" test.
Fixes #30510