Fix page overrides

@altsalt Reported that using a configuration like:

```
pages: {
	'/[...slug]': '/pages/[...slug]',
},
```

Throws the error: `[AstroUserError] Invalid page override, pattern must contain the same params in the same location`

This is an issue with the way route patterns are validated: https://github.com/astrolicious/astro-theme-provider/blob/main/package/src/utils/path.ts#L43-L52