Issue Comments display raw JSON instead of Adaptive Card.

[joshua-barton]

Describe the bug
Using the Microsoft Teams app for GitHub does not display issue comments as adaptive cards but instead shows the raw JSON for the comment card. See attached.

To Reproduce
Steps to reproduce the behavior:

1. With the MS Teams Integration setup, Go to 'Github -> Pull requests'
2. Click on any open PR
3. Scroll down to 'Add a comment'
4. Type in anything and hit comment.
5. Back in MS Teams, notice the comment fails to display correctly.

Expected behavior
A comment update on a PR displays correctly as an adaptative card.

Screenshots

Desktop (please complete the following information):

• OS: Windows 11 Pro
• Browser: [Chrome 129.0.6668.58 (Official Build) (64-bit)]
• Version [e.g. 129.0.6668.58]

Smartphone (please complete the following information):

• Device: [e.g. iPhone6] Google Pixel 8
• OS: [e.g. iOS8.1] Android 14
• Browser [e.g. stock browser, safari] Chrome
• Version [e.g. 22] 129.0.6668.70

Additional context
This appears to have just started over the weekend or today 9/30.

[RamonDiego00]

The same thing has with me, but this is happen when github application has connected in my channel team, when was connected in my solo application github the comments is normally building.

[LindaArende]

Same here, but I can pinpoint that the rendering broke somewhere between 12:47 and 14:53 EET time.