How to resolve configuration objects lang code differences? The default language for my site is Arabic, but the administration bits are in English. This means that for now, the only needed translations are those of labels and the interface.
Earlier I tried to translate some of my content types and found most of them configured like this:

English
Arabic
None (original)  Edit

With this message above:

The configuration objects have different language codes so they cannot
be translated:

node.type.person: en
core.base_field_override.node.person.title: ar


I tried changing the language settings for the content type but the language remained set to 'None'. Any idea about how to fix this?
I'm not sure I can help but I had a similar issue.
After enabling translation for pages, I got a similar error in admin/structure/types/manage/page/translate:

The configuration objects have different language codes so they cannot be translated:

node.type.page: en
core.base_field_override.node.page.title: pt


I think this happened because I was by mistake in /pt/admin (?).

Anyway, I fixed this (in my case, I always want en), by running the command:

$ drush cset core.base_field_override.node.page.title langcode en