Arrow keys do not work on Combobox without search input

[coryvirok]

Describe the bug

Creating a Combobox that does not have a search input field causes up/down arrow keyboard navigation to not work.

Following the example here https://www.shadcn-svelte.com/docs/components/combobox
Remove the Command.Input and Command.Empty lines and you'll find that you cannot use the keyboard to select an item from the dropdown.

Reproduction

https://stackblitz.com/edit/github-rc6ort?file=src%2Froutes%2F%2Bpage.svelte

Logs

No response

System Info

System:
    OS: Linux 5.0 undefined
    CPU: (8) x64 Intel(R) Core(TM) i9-9880H CPU @ 2.30GHz
    Memory: 0 Bytes / 0 Bytes
    Shell: 1.0 - /bin/jsh
  Binaries:
    Node: 18.20.3 - /usr/local/bin/node
    Yarn: 1.22.19 - /usr/local/bin/yarn
    npm: 10.2.3 - /usr/local/bin/npm
    pnpm: 8.15.6 - /usr/local/bin/pnpm
  npmPackages:
    @sveltejs/kit: ^2.0.0 => 2.5.2 
    bits-ui: ^0.18.2 => 0.18.2 
    cmdk-sv: ^0.0.13 => 0.0.13 
    formsnap: ^0.5.0 => 0.5.0 
    lucide-svelte: ^0.303.0 => 0.303.0 
    mode-watcher: ^0.2.1 => 0.2.1 
    svelte: ^4.2.9 => 4.2.9 
    svelte-sonner: ^0.3.18 => 0.3.18 
    sveltekit-superforms: ^2.5.0 => 2.5.0 
    vaul-svelte: ^0.2.4 => 0.2.4

Severity

annoyance