Templating: `date` helper is incompatible with `queryParam`

**Describe the bug**

Using the `date` helper with `queryParam` is not possible due to a SafeString return value. 

**To Reproduce**

```
{{date (queryParam 'dateFrom') (queryParam 'dateTo') 'YYYY'}}
```
Called with `?dateFrom=2022-06-01T00:00:00.000Z&dateTo=2022-06-03T12:00:00.000Z`
Returns an empty string.

