#145748 by meba, after coding style fixes: disable the checkbox on the default...
#145748 by meba, after coding style fixes: disable the checkbox on the default language, so it cannot be disabled (the submit handler already disallows disabling it)
2 merge requests!7452Issue #1797438. HTML5 validation is preventing form submit and not fully...,!789Issue #3210310: Adjust Database API to remove deprecated Drupal 9 code in Drupal 10
