Ghost on ddnet servers has hookability icon

[bretonium]

Branch staging (c3c459d).

Steps to reproduce:

1. Finish a ddnet map
2. Enable ghost replays for ddnet
3. Start the same map again
4. Watch the ghost

Expected: the ghost is the same as on the official ddnet client
Observed: the ghost has a hookability icon, as if they are a teammate in infclass

Unfortunately, this is not displayed in demos. Here is a screenshot of the issue.