Add mask as some vendors dont care bout depth testing

[kubazuch]

glDepthMask(GL_TRUE);
glDepthFunc(GL_LESS);

https://github.com/kubazuch/kEn/blob/d98c24a195368a65235b6fc1d44d07cc6648d329/kEn/src/platform/opengl/opengl_renderer_api.cpp#L36C27-L36C27

[kubazuch]

Thanks @mslup for noticing!