[Copilot] Apply style guide

[trask]

Make minimal changes to update all files in this repository to follow docs/style-guide.md. Ignore the @Nullable annotation usage section of the style guide.

[copilot-swe-agent]

@trask Unfortunately I hit an unexpected error while trying to work on issue #2192. I've automatically reported this to GitHub.

You can ask me to try again later by unassigning and then reassigning the issue to me again.

If you want to contact GitHub about this error, please mention the following identifier so they can better serve you: 7b939876-e989-438b-851c-d3c589d3c290

Sorry for the inconvenience!