ImageBitmapLoader: Make error handling more robust.

[Mugen87]

Fixed #31083.

Description

The PR fixes a bug in ImageBitmapLoader that can appear when more than one image loader try to load an erroneous URL with enabled caching. In that case, not all onError() callback were executed.

The idea of the PR is to keep track of the error object so it can be used to detect an error situation for duplicated requests.

[github-actions]

📦 Bundle size

Full ESM build, minified and gzipped.

	Before	After	Diff
WebGL	337.26 78.64	337.26 78.64	+0 B +0 B
WebGPU	548.43 152.04	548.43 152.04	+0 B +0 B
WebGPU Nodes	547.78 151.89	547.78 151.89	+0 B +0 B

🌳 Bundle size after tree-shaking

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

	Before	After	Diff
WebGL	467.33 112.95	467.33 112.95	+0 B +0 B
WebGPU	623.34 168.78	623.34 168.78	+0 B +0 B
WebGPU Nodes	578.19 158.07	578.19 158.07	+0 B +0 B

[ycw]

Would you mind update the class's jsdoc to clarify the limitation of current implementation:

- /* Also note that unlike {@link FileLoader}, this loader does not avoid multiple concurrent requests to the same URL.
+ /* Also note that unlike {@link FileLoader}, this loader avoids multiple concurrent requests to the same URL only if `Cache` is enabled.

FWIW, FileLoader can achieve this without global Cache

[ycw]

Thanks.