Add ability to run code with temporary locale. Fix #1347

[holden-nelson]

Pull Request Checklist

Resolves: #issue-number-here

• [x] Ensured tests pass and (if applicable) updated functional test output
• [x] Conformed to code style guidelines by running appropriate linting tools
• [x] Added tests for changed code
• [ ] Updated documentation for changed code

[holden-nelson]

Hello,

So I got around to implementing this. My apologies for a brand new pull request - I seemed to have lost the old fork and repo I had from the previous one. So there's some context for this at #2815