Use Unicode in Typst

I'd prefer if math converted to Typst used Unicode characters which is supported by Typst.

For instance, the following conversion transforms all elements of the equation into text.

```
> pandoc -t typst <<< '$\alpha + \beta = \lambda$'
$alpha plus beta eq lambda$
```

When I would prefer the output that we obtain when converting to plain for instance which is more readable.

```
> pandoc -t plain <<< '$\alpha + \beta = \lambda$'
α + β = λ
```

Is there any way to force pandoc to use Unicode first?