Shader examples (array_texture, shader_custom_material, shader_defs) are broken

[SarthakSingh31]

Bevy version

https://github.com/bevyengine/bevy/tree/704a11677881e762415b15e384c1b7a05fee7c1e

Operating system & version

Linux (5.9.11-2-MANJARO)

What you did

Ran cargo run --example shader_custom_material

What you expected to happen

I expected the same output as running cargo run --example shader_custom_material on v3.0.0

What actually happened

Additional information

The same behavior happens with array_texture and shader_defs. mesh_custom_attribute is working as expected.

They broke after #987 and were working at https://github.com/bevyengine/bevy/tree/1aff709d27da15096e4740c64d7058495f751a2c