[BE] Ensure privileges, policies and abilities are properly set up for custom types (#581944) · Issues · GitLab.org / GitLab · GitLab

[BE] Ensure privileges, policies and abilities are properly set up for custom types

MR: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/229591+ We likely want to use the `create_work_item` permission or introduce a new `create_work_item_of_custom_type`. Right now we look up the permission based on the base_type (in `Issues::BuildService`), which doesn't work for custom types.

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