For #5043

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- [x] Pull request represents a single change (i.e. not fixing disparate/unrelated things in a single PR)
- [x] Title summarizes what is changing
- [n/a] Has a [news entry](https://github.com/Microsoft/vscode-python/tree/master/news) file (remember to thank yourself!)
- [n/a] Has sufficient logging.
- [n/a] Has telemetry for enhancements.
- [x] Unit tests & system/integration tests are added/updated
- [n/a] [Test plan](https://github.com/Microsoft/vscode-python/blob/master/.github/test_plan.md) is updated as appropriate
- [n/a] [`package-lock.json`](https://github.com/Microsoft/vscode-python/blob/master/package-lock.json) has been regenerated by running `npm install` (if dependencies have changed)
- [n/a] The wiki is updated with any design decisions/details.