views – How can I list the nodes for which a Boolean value is FALSE or NULL?

On Drupal 9 I have a content type (Article), which has a not required Boolean field, Need Further Review.
Its values are TRUE, FALSE, and NULL, where the latter is used when the node doesn’t have yet a value for the field.

There is a view for that content type, with an exposed filter for that field. The filter options are Any, True, and False.

How can I list the nodes for which the field value is FALSE or NULL?