Fix Legacy GL Sprite clipping and Splat Boosters without shaders

This is a sprite clipping fix for Legacy GL that is done without shaders and as such will also work with shaders turned off.

This also fixes Splat Boosters being lodged into floors on some maps making it possible to see them again.

Thanks to Alu Folie(alufolie91) for assistance in fixing the Splat Booster issue!

Shaders on:

Shaders off:

Splat Booster before:

Splat Booster now: