WebGPUConstants: Fix name of RG11B10UFloat

[s-rigaud]

Description

WebGPUTextureUtils._getBytesPerTexel() was referencing RG11B10UFloat but the key was misspelled

[github-actions]

📦 Bundle size

Full ESM build, minified and gzipped.

	Before	After	Diff
WebGL	336.02 78.26	336.02 78.26	+0 B +0 B
WebGPU	524 145.47	520.4 145.06	-3.6 kB -412 B
WebGPU Nodes	523.47 145.37	519.87 144.96	-3.6 kB -411 B

🌳 Bundle size after tree-shaking

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

	Before	After	Diff
WebGL	465.06 112.14	465.06 112.14	+0 B +0 B
WebGPU	594.39 161.07	590.78 160.69	-3.6 kB -379 B
WebGPU Nodes	549.51 150.51	545.91 150.13	-3.6 kB -374 B