Config parsing fails when i18n is set to duplicate #7332
Description
Describe the bug
As per #7291 upon recently trying to configure a i18n site with the new i18n: duplicate value on a per-field basis as per the i18n Documentation, I discovered it causes my config to fail to parse.
Expected behavior
Setting i18n: duplicate should not cause config to fail to parse and should duplicate fields in a read-only fashion in the cloned page.
Screenshots
Applicable Versions:
- Decap CMS version: decap-cms 3.4.0
- Git provider: GitLab
- OS: Linux
- Browser version Firefox 115.14
- Site generator: Hugo
- Decap Setup: Hugo Module headless-cms
CMS configuration
locale: "en"
i18n:
structure: multiple_files
locales: [en, de]
default_locale: en
slug:
encoding: "ascii"
clean_accents: true
sanitize_replacement: "-"
collections:
- name: "blog"
label: "Blog"
label_singular: "Blog"
folder: "content/blog"
path: "{{slug}}"
widget: "list"
create: true
i18n: true
editor:
preview: true
preview_path: "blog/{{slug}}"
media_folder: '/static/uploads'
public_folder: '/uploads'
fields:
- label: "Title"
name: "title"
widget: "string"
i18n: true
- label: "Draft"
name: "draft"
widget: "boolean"
default: true
i18n: true
- label: "Image"
name: "banner"
widget: "image"
required: false
default: "/uploads/placeholder.jpg"
choose_url: true
media_folder: '/static/uploads'
public_folder: '/uploads'
i18n: true
If I change any of the i18n: true values in the fields to i18n: duplicate I get the broken config parsing error shown above.