userEvent.keyboard('{Enter}') does not trigger form submission in forms with radio group elements

Reproduction example

https://stackblitz.com/edit/rtl-template-dg4qziej?file=src%2FApp.tsx

Prerequisites

1. Render the form with radio group and text input field.
2. Submit the form using user event keyboard while focus on input text element
3. userEvent.keyboard('{Enter}') does trigger form submission

Expected behavior

userEvent.keyboard('{Enter}') does trigger form submission

Actual behavior

userEvent.keyboard('{Enter}') does not trigger form submission

User-event version

14.5.2

Environment

Testing Library framework: @testing-library/react@16.0.1

JS framework: react@18.2.0

Test environment: vitest@2.1.2

DOM implementation: jsdom@24.1.1

Additional context

Issue: userEvent.keyboard('{Enter}') does not trigger form submission when the form contains radio group elements.
Observation: Using fireEvent.submit successfully triggers form submission under the same conditions.

Start with the linked StackBlitz reproduction in src/App.tsx and confirm the failure when a form contains a radio group and text input. Trace the userEvent.keyboard('{Enter}') path, then verify that Enter submits the form in this case without relying on fireEvent.submit.