Destroy user_project_member_roles when a project_group_link is destroyed

What does this MR do and why?

When a ProjectGroupLink is destroyed run a background job to destroy all user_project_member_roles records where project_id = link.project and shared_with_group_id = link.group_id. This destroys all user_project_member_roles records of all members of link.group_id created when the group was invited to the project.

Database changes

::Authz::UserProjectMemberRole.in_project_shared_with_group(shared_project, shared_with_group).delete_all

EXPLAIN: https://console.postgres.ai/shared/363685cf-b35d-44b2-b7c3-41b5e4b23a1f

References

Destroy user_project_member_roles when project_... (#571087 - closed)

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