Bug Description

I'm trying to pass {{ site:short_locale }} as a parameter to a custom modifier. Is this even supposed to work?

The modifier $params in this example is null:

{{ title :translate="site:short_locale" }}

The modifier $params in this example is {site:short_locale}:

{{ title translate="{site:short_locale}" }}

How to Reproduce

Create a modifier and try to pass the parameter like in the example above.

Environment

Statamic 3.0.12 Pro
Laravel 7.28.3
PHP 7.4.9
aerni/translator dev-feature/statamic-v3