Tabs Content not passing tabindex

### Describe the bug

I've set tabindex={-1} but it's still using 0.

I think the value it's overrided internally for some reason.

### Reproduction

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

### Logs

```bash

```

### System Info

```bash
Latest version of BitsUI. I don't use npm I can't get that info.
```

### Severity

annoyance