Fixed timing-dependent content gating test
Fixed timing-dependent content gating test

- This test failed for me intermittently because the posts would be out of order
- I assume this is due to my super-powered M1 mac 😂
- This rewrite only aims to remove the dependency between the insertion order and the output order
- Everything else should be the same, and it still tests that the posts that are meant to be members only are exactly that

TryGhost/Ghost,e10/Ghost,e10/Ghost,TryGhost/Ghost,TryGhost/Ghost