Replace CV_NETVAR with CV_NOTINNET for cv_renderhitbox (Fixes #1103)

The CV_NETVAR flag being used for cvars not registered in a dedicated server context will completely mess with the internal netid to cvar linkage. And I'm not really keen on registering a cvar purely for rendering on dedicated servers, so let's just prevent renderhitbox from being changed in netgames entirely.

changed milestone to %2.2.13

added Bug Regression labels

Yup, have confirmed that it fixes #1103 (closed)

merged

mentioned in commit 0f914a4e

@spherallic @SteelT Any chance we can get this out as a hotfix? It's a pretty serious issue, and it breaks a lot of scripts on multiplayer servers.

While this fixes netgames, it does allow for renderhitbox to be used in netgames again: simply enable it before joining a server.

mentioned in merge request !2142 (merged)