Nucleare: Like button continuously loads when site's language is set to Polish

[SiobhyB]

Steps to replicate

1. Activate Nucleare on a WordPress.com site that has at least one published post.
2. Navigate to My Site > Sharing > Sharing Buttons.
3. Enable the like button on all posts on your site.
4. Navigate to My Site > Settings.
5. Switch the site's language to Polski (PL) via the Language dropdown menu.
6. View one of the site's posts.

Result

The like button does not load. Instead you see the following text in its place: Wczytywanie.... This is Polish for "Loading...".

You can switch to another language to see the button load correctly.

The browser console also includes the following error:

Uncaught Error: No locale meta information provided. at Jed.dcnpgettext (s0.wp.com/:689) at Chain.fetch (s0.wp.com/:581) at Object.updatePostFeedback (s0.wp.com/:2722) at displayPostLikeWidget (s0.wp.com/:3029) at Object.wpLikes.displayWidget [as success] (s0.wp.com/:3014) at Object.ajax (s0.wp.com/:2205) at Object.success (s0.wp.com/:2946) at s0.wp.com/:2219 at Deferred.execute (s0.wp.com/:1511) at Deferred.resolve (s0.wp.com/:1514)

Expected

I expected the button to load correctly.

• User report: 268625-h
• User's site: https://lifewife.blog/2018/03/18/mozna-😊/
• You can see the button load correctly if you switch the site's language to English: https://lifewife.blog/2018/03/18/mozna-%F0%9F%98%8A/?sa-locale=en

[SiobhyB]

This is an issue for all themes, not specific to Nucleare, so I'm moving over to 8016-wpcom.