docs: Add note about toolchain selection for Python REPL (#60549)

# Objective

Improve documentation to inform about toolchain in repl session and
avoid issues like https://github.com/zed-industries/zed/issues/60465

## Solution

- Add a note in documentation about using toolchain for change python
enviroment

## Self-Review Checklist:

- [x] I've reviewed my own diff for quality, security, and reliability

Release Notes:

- N/A

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Co-authored-by: Kunall Banerjee <hey@kimchiii.space>
5e549b871fVictor Raton committed on 7/30/2026, 3:19:59 AM· committed by GitHubparentb535bec
1 file changedLine totals unavailable