Run npm run env:init error on Windows

[NanaXiong00]

Describe the issue:
Running npm run env:init error in windows, as follows：

• pwsh
  
• bash
  

Repro Steps:

1. Clone the project.
2. Run python -m venv .venv and .venv\Scripts\activate.
3. Run pip install -r requirements.txt.
4. Run azd auth login.
5. Run npm i.
6. Run npm run env:init.

Environment:

• Azd version: azd version 1.9.6 (commit 0b1a8ad350177078312141f4465ad72205d7c077)
• OS: Windows desktop.

Expected behavior:
Run npm run env:init successfully.

@hemarina and @cwaddingham for notification.