Deleting a target group causes an error

[LarsSven]

When going into the Warpgate management UI and deleting a target group, Warpgate throws an error.

The error message shown in the UI reads:

(k,L)=>{m();var C=$();q(()=>z(C,t(f))),s(k,C)}

The warpgate log reads:

21:46:14 WARN HTTP: Request failed method=PUT url=https://localhost:8888/@warpgate/admin/api/target-groups/d73f9358-39fb-4769-9167-fbd68323e899 status=404 Not Found client_ip=::ffff:172.17.0.1 session=34a78044-f935-4b24-9986-83cb4af04046 session_username=admin client_ip=::ffff:172.17.0.1

The target group is properly deleted, I suspect the issue is that after deleting a target group, the user is sent back to the page of the specific target group that just got deleted, which now no longer exists. But I'm not 100% sure that's the issue.

Steps to reproduce:

1. Spin up warpgate locally using docker (Warpgate 0.18.0)
2. Log in as admin and create a target group
3. Delete the target group via the management UI