Arvados

originally brought up in #18339

side Q: how does should trash interact with 'role' groups? It appears a trashed 'role' group continues to be traversed for permissions until it is actually deleted from the system. Consider whether trashing a role group should either (a) not be allowed if there are outgoing permissions, (b) the operation of putting it in the trash should also delete all the outgoing permissions, or (c) the concept of trash doesn't apply to the role group, and it is always deleted immediately.

From discussion:

We probably want option (c), non-project groups should skip being trashed and be deleted immediately.