[docs] gITF example is broken

[bertday]

When I go here:

https://luma.gl/examples/tutorials/hello-gltf

I get a console error:

start undefined failed Error: No matching device found. Ensure `@luma.gl/webgl` and/or `@luma.gl/webgpu` modules are imported.

and

Uncaught (in promise) Error: Texture: invalid image data

Browser: Brave 1.75.180 Chromium: 133.0.6943.126 (Official Build) (arm64)
Machine: MacBook Air M1 2020 running macOS Sequoia 15.3.1 (24D70)

[andreasplesch]

Latest Firefox also fails:
(Firefox 141.0.3) (64-bit)

Uncaught (in promise) Error: Texture: invalid image data
    _setMipLevel https://luma.gl/assets/js/78f41478.4edbf729.js:2
    setTexture2DData https://luma.gl/assets/js/78f41478.4edbf729.js:2
    _initialize https://luma.gl/assets/js/78f41478.4edbf729.js:2
    Rt https://luma.gl/assets/js/78f41478.4edbf729.js:2
    createTexture https://luma.gl/assets/js/78f41478.4edbf729.js:2
    de https://luma.gl/assets/js/2308.5922cff8.js:1
    fe https://luma.gl/assets/js/2308.5922cff8.js:1
    fe https://luma.gl/assets/js/2308.5922cff8.js:1
    fe https://luma.gl/assets/js/2308.5922cff8.js:1
    o https://luma.gl/assets/js/2308.5922cff8.js:1
    createPrimitive https://luma.gl/assets/js/2308.5922cff8.js:1
    t https://luma.gl/assets/js/2308.5922cff8.js:1
    createMesh https://luma.gl/assets/js/2308.5922cff8.js:1
    createNode https://luma.gl/assets/js/2308.5922cff8.js:1
    t https://luma.gl/assets/js/2308.5922cff8.js:1
    createScene https://luma.gl/assets/js/2308.5922cff8.js:1
    instantiate https://luma.gl/assets/js/2308.5922cff8.js:1
    instantiate https://luma.gl/assets/js/2308.5922cff8.js:1
    Ae https://luma.gl/assets/js/2308.5922cff8.js:1
    loadGLTF https://luma.gl/assets/js/78f41478.4edbf729.js:2

Looking at the network tab it seems that textures are only partially loaded before the error, eg.

https://raw.githubusercontent.com/KhronosGroup/glTF-Sample-Assets/main/Models/Avocado/glTF/Avocado_baseColor.png

gets only to