HemisphereLightNode: Changed normalView to normalWorld.

[vitro-mod]

Fixed #31073

Description

HemisphereLightNode uses normalView which causes unwanted color drift when camera angle changes.

This PR changes normalView to normalWorld in light calculation

[github-actions]

📦 Bundle size

Full ESM build, minified and gzipped.

	Before	After	Diff
WebGL	336.29 78.32	336.29 78.32	+0 B +0 B
WebGPU	548.37 152.05	548.37 152.05	+0 B +0 B
WebGPU Nodes	547.72 151.9	547.72 151.9	+0 B +0 B

🌳 Bundle size after tree-shaking

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

	Before	After	Diff
WebGL	466.23 112.58	466.23 112.58	+0 B +0 B
WebGPU	623.15 168.75	623.15 168.75	+0 B -1 B
WebGPU Nodes	578.02 158.03	578.02 158.03	+0 B +0 B