Usernames do not show up in review comments

[donokuda]

• GitHub Extension for Visual Studio version: 2.5.4.3349

What happened (with steps, logs and screenshots, if possible)

1. View a pull request with a review (I used Update eligible projects to new SDK format. #1761 in this example)
2. View a file comment in a review
3. Observe the absence of a username 😭