The only significant results for “ro_V26” relate to TBLauncher’s Weblate project, which has the note:

Translations for v26 (Android 8.0 or API level 26) should go only in strings-v26 component (not in strings) but I can’t find a way to remove the language-v26 from strings

https://hosted.weblate.org/projects/tblauncher/strings/ro_V26/

So looks like just a product-version-specific translation and a configuration problem