GitHub Copilot causes error when editing tags

[alexweininger]

Issue is not related to unified changes and reproduces in the released version v0.4.0.

Probably need to file this against GitHub Copilot but wanted to track it here first.

rejected promise not handled within 1 second: Error (FileSystemError): Internal error: Expected value to be neither null nor undefined: id
[/Applications/Visual]() Studio Code - Insiders.app/Contents/Resources/app/out/vs/workbench/api/node/extensionHostProcess.js:104
stack trace: Error (FileSystemError): Internal error: Expected value to be neither null nor undefined: id
    at Function._handleError (/Applications/Visual Studio Code - Insiders.app[/Contents/Resources/app/out/vs/workbench/api/node/extensionHostProcess.js:85:90345]())
    at Object.readFile ([/Applications/Visual]() Studio Code - Insiders.app[/Contents/Resources/app/out/vs/workbench/api/node/extensionHostProcess.js:85:88819]())
    at processTicksAndRejections (node:internal[/process/task_queues:96:5]())
    at Object.readFile ([/Users/alex/.vscode-insiders/extensions/github.copilot-1.12.5517/dist/extension.js:8:340931]())
    at [/Users/alex/.vscode-insiders/extensions/github.copilot-1.12.5517/dist/extension.js:8:424266]()

Notes:

1. Does not reproduce when Copilot is disabled for .jsonc files