Headless clients fail startup due to using GL.GetInteger in PreloadRsis

[ShadowCommander]

Headless clients are currently broken due to using an OpenGL binding in PreloadRsis.

Error:

You need to initialize the OpenGL binding first by calling LoadBindings() or creating a compatible OpenGL window.

GL.GetInteger

RobustToolbox/Robust.Client/ResourceManagement/ResourceCache.Preload.cs

Line 184 in 4033d96

var maxSize = Math.Min(GL.GetInteger(GetPName.MaxTextureSize), _configurationManager.GetCVar(CVars.ResRSIAtlasSize));