TSL: support uniformArrays from userData() and .label() for userData() and reference()

[aardgoose]

Added updateReference() method to userDataNode to enable use off array uniforms.
Add label() method to references() to aid debugging shaders.

Also remove redundant method from UniformArrayNode.

[github-actions]

📦 Bundle size

Full ESM build, minified and gzipped.

	Before	After	Diff
WebGL	685.94 169.78	685.94 169.78	+0 B +0 B
WebGPU	832.7 223.11	832.75 223.12	+50 B +13 B
WebGPU Nodes	832.21 222.99	832.25 223	+50 B +13 B

🌳 Bundle size after tree-shaking

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

	Before	After	Diff
WebGL	462.29 111.52	462.29 111.52	+0 B +0 B
WebGPU	530.17 142.83	530.2 142.85	+35 B +19 B
WebGPU Nodes	486.82 132.69	486.86 132.71	+35 B +21 B