[Screen Reader] Clickable block name is incorrectly announced in tutorial step content during keyboard navigation

Describe the bug
When using a screen reader (Windows Narrator or macOS VoiceOver), the clickable block name in tutorial step content is incorrectly announced as its category name instead of the block name during keyboard navigation.

Steps to reproduce the behavior:

1. Enable a screen reader: Windows Narrator (Windows 11) or VoiceOver (macOS)
2. Navigate to Microsoft MakeCode for micro:bit.
3. Tab to a tutorial card.
4. Press Enter twice to start the tutorial.
5. Use Tab/Enter to navigate to a tutorial step content area.
6. Observe the screen reader announcement.

Actual behavior
The screen reader announces the category name instead of the clickable block name.

Expected behavior
The screen reader correctly announces the clickable block name when focused in the tutorial step content.

Screen Recording
https://github.com/user-attachments/assets/3f2c7115-57db-4a45-9f02-ca2c9355fe69

Additional context
1.OS: Windows 11 25H2 & Mac Mini M2 macOS Tahoe 26.5.1
2.Browser: Chrome, Edge, Firefox, and Safari
3.makecode.microbit.org version: 8.1.28
4.Microsoft MakeCode version: 12.3.24
5.Screen Readers: Narrator and VoiceOver

Start at the tutorial card and tutorial step content entry points involved in keyboard navigation, then reproduce with Narrator or VoiceOver and inspect the focused clickable block's accessible name. Compare the announced category name with the expected block name across the listed browsers. Done when the block name is announced correctly during Tab/Enter navigation.