[Task]: Investigate passing `--no-compile` to `pip`

[diox]

Description

--no-compile tells pip not to compile bytecode of dependencies when installing them - they would instead be compiled at runtime where needed. It's one of the tricks uv does by default to be super-fast.

• Investigate if that would be valuable in our image.
• Investigate if that would be valuable in CI when installing extra deps for testing
• Investigate if that would be valuable locally when installing extra deps for development

Also note that our local environments have PYTHONDONTWRITEBYTECODE=1... But our CI as well. Should that change? It probably doesn't matter in CI because each job would run python only once...

Acceptance Criteria

• item 1

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