Make labels of array field type available in templates

[klickreflex]

It is impossible to render the labels defined on a keyed array field in templates.

Assume the following field:

handle: stakeholders
  field:
    mode: keyed
    keys:
      visualisierung: Visualisierung
      freiflaechenplanung: Freiflächenplanung

We can iterate over keys and values in antlers:

{{ foreach:stakeholders }}
  {{ key }}
  {{ value }}
{{ /foreach:stakeholders }}

However, there is no way to render the label in templates (e.g. showing the labels Visualisierung and Freiflächenplanung instead of the keys visualisierung and value.