Support built-in commands for Node.js runners and Pip

[insign]

This PR improves the command generation for Node.js runners (npm, yarn, pnpm, bun) and Python's pip runner.
Previously, run would wrap all commands in run (e.g. npm run install), which caused issues for built-in commands like install that are not scripts.
Now, run checks if the task is a known built-in command and executes it directly if so.
For pip, it now generates python -m pip <task> for pip commands (like install, list) and python -m <task> for others.

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PR created automatically by Jules for task 17896635186105742915 started by @insign

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