RenderObject: Honor sampler data in material cache key.

[Mugen87]

Fixed #31631.

Description

The WebGPU backend must not share node builder states when sampler data of render objects mismatch.

Render objects that share the node builder state also share the same bindings which is the root cause of #31631.

[github-actions]

📦 Bundle size

Full ESM build, minified and gzipped.

	Before	After	Diff
WebGL	338.9 79.1	338.9 79.1	+0 B +0 B
WebGPU	570.33 157.5	570.44 157.54	+108 B +40 B
WebGPU Nodes	568.94 157.26	569.05 157.3	+108 B +39 B

🌳 Bundle size after tree-shaking

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

	Before	After	Diff
WebGL	470.64 113.87	470.64 113.87	+0 B +0 B
WebGPU	643.16 173.92	643.27 173.96	+108 B +43 B
WebGPU Nodes	597.34 163.12	597.45 163.16	+108 B +41 B

[Mugen87]

I'll go ahead and merge so I can move on with fixing the missing manual mipmaps support.