Chibi Robo Mud Zfighting

Description

TODO: Reference rendering here.

Before tev_fixes_new, this mud would suffer from severe zfighting.

Recent results

	2503a-511	2503a-342	2503-198	2412-189	2409-95	2407-219	2407-197	5.0-21601	5.0-21584	5.0-20762	5.0-20725	5.0-20584	5.0-20140	5.0-19601	5.0-19485	5.0-19213	5.0-19141	5.0-18358	5.0-18349	5.0-18265	5.0-18257	5.0-18155	5.0-18130	5.0-17842	5.0-17768	5.0-17125	5.0-17047	5.0-16997	5.0-16995	5.0-16926	5.0-16331	5.0-16263	5.0-16075	5.0-16012	5.0-15880
mtl-osx-m1
mvk-osx-m1
ogl-lin-mesa
ogl-lin-radeon
sw-lin-mesa
uberogl-lin-radeon
vk-lin-mesa