Update WGSLNodeBuilder.js

[Spiri0]

Arrays are not currently taken into account by the wgslTypeLib. However, with the struct extension mrdoob#29908, arrays will also become important as a type.

[github-actions]

📦 Bundle size

Full ESM build, minified and gzipped.

	Before	After	Diff
WebGL	339.11 78.98	339.11 78.98	+0 B +0 B
WebGPU	484.57 134.48	484.8 134.59	+224 B +107 B
WebGPU Nodes	484.04 134.38	484.26 134.49	+224 B +108 B

🌳 Bundle size after tree-shaking

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

	Before	After	Diff
WebGL	464.62 111.98	464.62 111.98	+0 B +0 B
WebGPU	553.36 149.77	553.59 149.89	+224 B +119 B
WebGPU Nodes	509.24 139.48	509.47 139.6	+224 B +120 B