[Bug]: Optional path parameter not working

[themgoncalves]

What version of React Router are you using?

6.2.1

Steps to Reproduce

<Routes>
      <Route path="/:lang?" element={<App />} />
</Routes>

Expected Behavior

Optional path to work and render target component.

Both paths should match.

/en
/

Actual Behavior

Optional path not working, that was a breaking change on the v6.

The question mark ? to mark an optional parameter breaks the framework.

[Haraldson]

This is not a bug, but a conscious decision; see #8381, #8254 and #7285.