TSL: Deprecated modInt() and minor fixes

[sunag]

Description

Deprecated modInt() to use mod() instead, making the syntax simpler and if you use mod( int() ) the optimization is done automatically.

[github-actions]

📦 Bundle size

Full ESM build, minified and gzipped.

	Before	After	Diff
WebGL	336.08 78.29	336.08 78.29	+0 B +0 B
WebGPU	530.37 147.37	530.63 147.4	+266 B +23 B
WebGPU Nodes	529.83 147.27	530.1 147.29	+266 B +21 B

🌳 Bundle size after tree-shaking

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

	Before	After	Diff
WebGL	465.15 112.18	465.15 112.18	+0 B +0 B
WebGPU	602 163.34	602.31 163.4	+302 B +65 B
WebGPU Nodes	557.04 152.86	557.35 152.84	+302 B -26 B