[Internal] Use sys.executable to make sure dev setup use current env.

[thy09]

Description

Currently there are some corner case scenarios that pip is not in the subprocess environment. To avoid this issue, we directly use sys.executable to make sure we can use correct pip in the subprocess.

This pull request includes changes to the scripts/dev-setup/main.py file to improve the package installation process. The changes involve importing the sys module and modifying the install_pkg_editable function.

Key changes include:

• scripts/dev-setup/main.py: Imported the sys module to use the Python interpreter's executable for package installation.
• def install_pkg_editable(pkg: str, verbose: bool, is_vscode: bool = False) -> No in scripts/dev-setup/main.py: Modified the command used for package installation to use sys.executable instead of directly calling pip. This ensures that the correct Python interpreter is used for the installation process.

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