fix: remove required attribute when click remove button

Author: rust17

src/Form/Field/HasMany.php

@@ -497,6 +497,7 @@ protected function setupScriptForDefaultView($templateScript)
 });
 
 $('#has-many-{$this->column}').off('click', '.remove').on('click', '.remove', function () {
+    $(this).closest('.has-many-{$this->column}-form').find('input').removeAttr('required');
     $(this).closest('.has-many-{$this->column}-form').hide();
     $(this).closest('.has-many-{$this->column}-form').find('.$removeClass').val(1);
     return false;