Lighting: Refactor camera usage

[sunag]

Related issue: #32546

Description

Refactoring based on the improvements made in #32546, since a new RenderObject should not be created after changing the camera after test #32527.

[github-actions]

📦 Bundle size

Full ESM build, minified and gzipped.

	Before	After	Diff
WebGL	355.17 84.44	355.17 84.44	+0 B +0 B
WebGPU	618.17 171.68	618.14 171.68	-32 B -3 B
WebGPU Nodes	616.78 171.43	616.75 171.43	-32 B -3 B

🌳 Bundle size after tree-shaking

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

	Before	After	Diff
WebGL	487.34 119.31	487.34 119.31	+0 B +0 B
WebGPU	688.81 187.1	688.77 187.1	-32 B +0 B
WebGPU Nodes	638.65 174.3	638.62 174.29	-32 B -9 B

[Mugen87]

There is one use case where the camera does indeed influence the structure of the shader which is multi-view rendering. However, this is global setting for XR and it's okay if the shaders recompile when entering XR or when leaving it. We just have to make sure the cache keys are different.