Core: Add ReversedDepthFuncs dictionary.

[Mugen87]

Related issue: #32967

Description

Small follow-up of #32967. The PR creates a dictionary in utils.js for selecting the correct depth functions when reversed depth buffer is in use.

[github-actions]

📦 Bundle size

Full ESM build, minified and gzipped.

	Before	After	Diff
WebGL	359.19 85.29	359.14 85.24	-50 B -49 B
WebGPU	621.28 173.2	621.16 173.09	-125 B -115 B
WebGPU Nodes	619.86 172.95	619.74 172.84	-125 B -108 B

🌳 Bundle size after tree-shaking

Minimal build including a renderer, camera, empty scene, and dependencies.

	Before	After	Diff
WebGL	490.85 119.65	490.85 119.65	+0 B -1 B
WebGPU	694.92 188.22	694.86 188.15	-59 B -71 B
WebGPU Nodes	644.12 175.61	644.06 175.54	-59 B -63 B