Dynamic Inventory group by tag puts all tags into 1 group

[cspoonerprice]

I'm currently running on the latest version:

$ cat collections/requirements.yml
collections:
    - name: device42.d42
      version: 1.2.1.230915
      source: https://galaxy.ansible.com/

keyed groups aren't being split by comma when using tags. I've also attempted with other separators with similar results

$ cat *.d42.yml
plugin: device42.d42.d42
...
keyed_groups:
    - key: d42_tags
      prefix: ''
      separator: ','

All tags are concatenated together for groups instead of being split. Very similar to #6

[cspoonerprice]

It is possible to work around, but requires:

compose:
my_tags_list: d42_tags.split(',')
keyed_groups:
- key: my_tags_list