Fix code reloading problems with custom database types

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/173566



Merged-by: Kev Kloss <kkloss@gitlab.com>
Approved-by: Kev Kloss <kkloss@gitlab.com>
Approved-by: Amy Qualls <aqualls@gitlab.com>
Approved-by: drew stachon <730684-drew@users.noreply.gitlab.com>
Approved-by: Matt Kasa <mkasa@gitlab.com>
Co-authored-by: Stan Hu <stanhu@gmail.com>