Simulator fails to load when clicking Run in the Example section of Bluetooth help cards

Describe the bug
When opening a Bluetooth help card that contains an Example section and clicking Run, the simulator fails to load. Instead, a persistent white box displaying “loading…” appears, and the simulator never renders.

Steps to reproduce the behavior:

1. Navigate to https://makecode.microbit.org/beta
2. Create a new project to open the editor.
3. Click Help icon, then select the Reference link.
4. Scroll down and click Bluetooth card.
5. Open any Bluetooth card that includes an Example section.
6. In the Example section, click the Run button.
7. Obverse the simulator behavior.

Actual behavior
The simulator area displays a white box with “loading…” indefinitely after clicking run.

Expected behavior
The simulator should load successfully and display the example animation, consistent with other examples in the reference documentation.

Screenshots

Additional context
1.OS: Windows 11 25H2
2.Browser: Chrome, Edge, and Firefox
3.makecode.microbit.org version: 8.1.9
4.Microsoft MakeCode version: 12.3.3

Reproduce the issue from the Bluetooth reference help card's Example section by clicking Run, then inspect the help-card example and simulator loading entry points. Verify the behavior across the listed browsers and confirm that the example animation renders instead of leaving a persistent “loading…” box.