Minor WebGL->WebGPU fixes

[davepagurek]

This fixes a few things that came up when testing a p5.strands tutorial sketch in WebGPU mode:

• We're logging something every frame in compute shaders
• Framebuffers created with depth: false are broken
• noSmooth() throws an error and doesn't work
• We don't actually document createCanvas as needing to be awaited in WebGPU mode in the description or the types
• textureSample doesn't work in conditional branches with uniforms as conditions
  • For this one I updated it to textureSampleLevel, which is equivalent for us rn while we don't have mipmaps, and works in uniform conditionals

This contains some small fixes for all of those oversights and adds little unit tests for each.

[p5-bot]

Continuous Release

CDN link

• https://raw.esm.sh/pr/p5@1ec7e78/lib/p5.min.js

Published Packages

• https://pkg.pr.new/p5@1ec7e78

Commit hash: 6195a95

Previous deployments

44d1540

• https://raw.esm.sh/pr/p5@102919d/lib/p5.min.js
• https://pkg.pr.new/p5@102919d

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