Allow non-filtering integer texture sampling

[JMS55]

Checklist

• Run cargo clippy.
• Run RUSTFLAGS=--cfg=web_sys_unstable_apis cargo clippy --target wasm32-unknown-unknown if applicable.
• Add change to CHANGELOG.md. See simple instructions inside file.

Connections

• Closes Integer textures can't be sampled #3303
• Requires Update naga to e98bd92 #3352
• Context: Issues with textureGather on texture_2d<u32> naga#2135
• Context: Temporal Antialiasing and Screenspace Ambient Occlusion bevyengine/bevy#7070

Description
Allow using textureGather on integer textures, by allowing non-filtered integer texture sampling.

Testing
Ran my bevy fork with this patch applied. Modify bevy/Cargo.toml to patch wgpu/naga, then run cargo run --example ssao.

[codecov-commenter]

Codecov Report

Merging #3362 (5088134) into master (a06ef71) will decrease coverage by 0.00%.
The diff coverage is 60.00%.

@@            Coverage Diff             @@
##           master    #3362      +/-   ##
==========================================
- Coverage   64.49%   64.49%   -0.01%     
==========================================
  Files          86       86              
  Lines       42696    42697       +1     
==========================================
  Hits        27537    27537              
- Misses      15159    15160       +1     

Impacted Files	Coverage Δ
wgpu-core/src/validation.rs	58.93% <60.00%> (+0.05%)	⬆️
wgpu-core/src/hub.rs	60.67% <0.00%> (-0.16%)	⬇️

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.

[teoxoy]

LGTM, thanks!