win: improve OneDrive data deletion safety

This commit improves the safety mechanisms in the script for deleting
OneDrive user data on Windows.

Key changes:

- System Integrity Protection: The script now checks if user shell
  folders point to the OneDrive directory. If they do, it halts the
  deletion and provides guidance to the user. This ensures system
  stability is not compromised.
- Data Loss Prevention: The script will no longer delete files or
  non-empty folders. This precaution helps to avoid unintended data
  loss.

Other supporting changes:

- This script now covers OneDrive folders for multi-account users.
- Separation of concerns: The 'Remove OneDrive residual files' script is
  is divided into two distinct scripts for better maintainability and
  documentation clarity:
  1. 'Remove OneDrive user data and synced folders'
  2. 'Remove OneDrive installation files and cache'
- Fix an issue with the Windows 11 check in the 'Disable automatic
  OneDrive installation' revert script.
- Update related documentation with archived URLs for reliability.
- Fix indentation of OneDrive removal scripts.