WebGL2 deferred rendering breaks when anisotropy is enabled

[DGriffin91]

Bevy version 5876352 and v0.14.0-rc.4

The deferred rendering example is broken on WebGL2.

The issue was introduced at df8ccb8 with #13450

panicked at [...]\.cargo\registry\src\index.crates.io-6f17d22bba15001f\wgpu-hal-0.19.4\src\gles\command.rs:756:21:
index out of bounds: the len is 16 but the index is 16

[alice-i-cecile]

We should be sure to test this in concert with #14048

[DGriffin91]

@alice-i-cecile This works with #14048 with the pbr_anisotropy_texture feature disabled (default), and has the same issue with it enabled.

[alice-i-cecile]

Thanks for checking: that makes sense.

[BD103]

Last time this was solved by disabling the offending feature in #11909. @pcwalton, you may be interested in this.

[pcwalton]

Nothing to do here but land the anisotropy disable PR.

[alice-i-cecile]

Fixed enough for now with #14048 merged.