EZP-24713 adds support for policy limitations edition.
For a LimitationType to be editable, a form mapper service needs to be implemented.
Most LimitationTypes are multiple select based, so they can be based on \EzSystems\RepositoryForms\Limitation\Mapper\MultipleSelectionBasedMapper.
LimitationFormMappers are services implementing \EzSystems\RepositoryForms\Limitation\LimitationFormMapperInterface. Service definition must have ez.limitation.formMapper tag, with the limitation type identifier as limitationType service tag attribute.
All core limitation types are defined in CoreBundle's policies.yml.
Missing mappers are: