Clean up resource preview for practice quiz selection

[rtibbles]

Summary

• Don't show inaccurate headers for practice quizzes.
• Allow direct pressing of the "Select quiz" button when previewing the quiz.

References

Fixes issues observed by @marcellamaki while reviewing another PR

Reviewer guidance

Follow the select practice quiz workflow
Preview the quiz
Ensure all displayed buttons and information are relevant and functional.
Ensure quiz can be selected from the select quiz button and that it properly handles the selection action.

[marcellamaki]

@pcenov @radinamatic I've tagged this in as needs QA although I'm doing a first pass of manual QA now as I'm doing code review

[github-actions]

Build Artifacts

Asset type	Download link
PEX file	kolibri-0.18.0b1.dev0_git.172.g00b558f6.pex
Windows Installer (EXE)	kolibri-0.18.0b1.dev0+git.172.g00b558f6-windows-setup-unsigned.exe
Debian Package	kolibri_0.18.0b1.dev0+git.172.g00b558f6-0ubuntu1_all.deb
Mac Installer (DMG)	kolibri-0.18.0b1.dev0+git.172.g00b558f6.dmg
Android Package (APK)	kolibri-0.18.0b1.dev0+git.172.g00b558f6-0.1.4-debug.apk
Raspberry Pi Image	kolibri-pi-image-0.18.0b1.dev0+git.172.g00b558f6.zip
TAR file	kolibri-0.18.0b1.dev0+git.172.g00b558f6.tar.gz
WHL file	kolibri-0.18.0b1.dev0+git.172.g00b558f6-py2.py3-none-any.whl

[marcellamaki]

The code changes make sense to me, and the overall interaction seems to be working exactly as we discussed. The one lingering piece (which I didn't catch before) is that the snackbar continues to have the default 10 questions as the number added, rather than reflecting the actual number of questions. I've double checked, and the issue is specific to practice quizzes. I think it would be ideal to update this now as well if you don't mind.

Screen.Recording.2025-04-01.at.6.10.10.PM.mov

[rtibbles]

Thanks @marcellamaki I have updated - the current notification function was inferring the number of questions slightly magically, so I have changed it to take an explicit count instead and that seems to have resolved it.

Did a quick regression test on regular question adding (both auto select and manual) and no issues observed.

[pcenov]

The issue reported by Marcella is fixed now, everything else looks good too.