Update state var on language entity update (not only on form edit)

2.0.x now passes gitlab :)

hook_configurable_language_insert|update() return $parsed NULL in DrupalOrgPluralFormula::updatePluralFormula()

Thank you! Also, could you, please, remove all changes that are not in the scope of this issue? They are only adding noise to the MR.

yes, let's focus on resolving a specific issue.
For PHPCS issues, I have created ticket #3535417.

Manual testing completed. No issues found. Code appears stable and ready for merge.