When a kanban view is grouped by a char or a boolean field, and the
quick create option is enabled, the correct default value for the
grouped field (i.e. the value of the column in which the record is
created) should be given (either in the context if that field isn't
in the quick create form view, or as a default value in that form
view otherwise).
Before this rev., it wasn't the case, as it was only working when
grouped by a many2one field.
Task 1878254