DataTextureLoader: Move return in catch block to correct position.

[Om-Mishra09]

Description
This PR fixes a missing return statement in the DataTextureLoader.js error handling block.

Previously, if a parsing error occurred and an onError callback was provided, the callback was invoked but execution continued, eventually throwing a TypeError when evaluating texData.image. This moves the return; statement to ensure execution halts appropriately.

[github-actions]

📦 Bundle size

Full ESM build, minified and gzipped.

	Before	After	Diff
WebGL	360.01 85.46	360.01 85.46	+0 B +0 B
WebGPU	633.22 175.54	633.22 175.54	+0 B +0 B
WebGPU Nodes	631.34 175.25	631.34 175.25	+0 B +0 B

🌳 Bundle size after tree-shaking

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

	Before	After	Diff
WebGL	492.21 120.03	492.21 120.03	+0 B +0 B
WebGPU	705.25 190.44	705.25 190.44	+0 B +0 B
WebGPU Nodes	654.47 177.68	654.47 177.68	+0 B +0 B

[Mugen87]

This PR fixes a critical bug inside DataTextureLoader.js

Just for the sake of correctness: This is not a critical bug. The wording you (or your AI) choose here is completely inappropriate.