Continue using Microsoft: Error using githubazure.com account

Testing #333246

Not sure why I have it listed, but I just tried using my githubazure.com account and that immediately fails:

```
2026-08-31 11:20:53.072 [error] Could not acquire a Microsoft access token: platform_broker_error: See https://aka.ms/msal.js.errors#platform_broker_error for details
2026-08-31 11:20:53.072 [error] Error: Could not sign in to Microsoft. Try again or choose a different way to sign in.
at A_.getMicrosoftToken (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/github-authentication/dist/extension.js:13:55222)
at async A_.login (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/github-authentication/dist/extension.js:13:53169)
at async C_.loginWithMicrosoft (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/github-authentication/dist/extension.js:17:4538)
at async Ef.createMicrosoftSession (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/github-authentication/dist/extension.js:18:6700)
at async Ef.createSession (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/github-authentication/dist/extension.js:18:5846)
at async file:///Applications/Visual%20Studio%20Code%20-%20Insiders.app/Contents/Resources/app/out/vs/workbench/api/node/extensionHostProcess.js:544:21918
```