Update venv labeling to show [uv] when uv is available#810

eleanorjboyd with Copilot wants to merge 8 commits into

mainmicrosoft/vscode-python-environments:mainfrom

copilot/update-venv-label-for-uvmicrosoft/vscode-python-environments:copilot/update-venv-label-for-uvCopy head branch name to clipboard