Keyboard navigation: Focus is lost after activating "Go Back" button on Open Simulator Data page (Data Logging Examples)

Describe the bug
When using default keyboard navigation (Tab/Enter) in the MakeCode editor, focus is lost after activating the "Go Back" button on the Open Simulator Data page accessed from Data Logging Examples.

Steps to reproduce the behavior:

1. Navigate to https://makecode.microbit.org/beta.
2. Scroll to the Data Logging Examples category.
3. Click the "Open in Editor" button under any card.
4. Use Tab to move focus to the "Show data (Simulator)" button.
5. Press Enter to open the Simulator Data page.
6. Press Tab again to move focus to the "Go Back" button.
7. Press Enter and observe the focus behavior.

Actual behavior
Focus is lost after activating the "Go Back" button in the Open Simulator Data page. No visible focus indicator remains on the UI.

Expected behavior
After activating the "Go Back" button, focus should return to the "Show data (Simulator)" button to ensure a consistent and accessible keyboard navigation experience.

Screen Recording
https://github.com/user-attachments/assets/058766da-2c15-45b6-8e0e-446f334dce02

Additional context
1.OS: Windows 11 25H2 & Mac Mini M2 macOS Tahoe 26.5
2.Browser: Chrome, Edge, Firefox, and Safari
3.makecode.microbit.org version: 8.1.17
4.Microsoft MakeCode version: 12.3.12

Start by reproducing the keyboard flow on the beta MakeCode editor, then trace the "Show data (Simulator)" and "Go Back" navigation behavior. Done means activating "Go Back" restores focus to the "Show data (Simulator)" button with a visible focus indicator across the reported browsers.