Why the windows mcp config file is not in utf encoding?

Currently, the encoding of mcp config file on Windows platform is not actually utf8 encoding although the editor shows utf-8. It causes garbled text when parsing the config file with some third-party mcp management tools like mcpm if there is Chinese in the config file.

env:
Version: 0.49.6 (user setup)
VSCode Version: 1.96.2
Commit: 0781e811de386a0c5bcb07ceb259df8ff8246a50
Date: 2025-04-25T04:49:20.797Z
Electron: 34.3.4
Chromium: 132.0.6834.210
Node.js: 20.18.3
V8: 13.2.152.41-electron.0
OS: Windows_NT x64 10.0.26100