TSL: Fixes the return value of atomic* nodes

[sunag]

Related issue: #30732 (comment)

Description

Detects whether atomic* needs to return a value or can be added to the stack immediately, allowing it to be used inside or outside expressions.

Summary

• add parents properties
• TSL: Fixes the return value of atomic* nodes

[github-actions]

📦 Bundle size

Full ESM build, minified and gzipped.

	Before	After	Diff
WebGL	336.33 78.33	336.33 78.33	+0 B +0 B
WebGPU	546.51 151.52	546.7 151.58	+193 B +63 B
WebGPU Nodes	545.86 151.36	546.05 151.43	+193 B +64 B

🌳 Bundle size after tree-shaking

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

	Before	After	Diff
WebGL	465.78 112.28	465.78 112.28	+0 B +0 B
WebGPU	620.88 167.96	621.07 168.02	+193 B +62 B
WebGPU Nodes	575.75 157.27	575.95 157.33	+193 B +65 B

[RenaudRohlinger]

Thanks for this @sunag!