Fix quiz preview

[AlexVelezLl]

Summary

This PR fixes some inconsitencies with some props of QuestionListPreview component to fix the quiz preview view.

References

Closes #12430

Reviewer guidance

1. Create a new quiz with sections and questions and save it.
2. Go to Coach > Reports > Quizzes click on the title of a quiz and then select the Preview option.

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Testing checklist

• Contributor has fully tested the PR manually
• If there are any front-end changes, before/after screenshots are included
• Critical user journeys are covered by Gherkin stories
• Critical and brittle code paths are covered by unit tests

PR process

• PR has the correct target branch and milestone
• PR has 'needs review' or 'work-in-progress' label
• If PR is ready for review, a reviewer has been added. (Don't use 'Assignees')
• If this is an important user-facing change, PR or related issue has a 'changelog' label
• If this includes an internal dependency change, a link to the diff is provided

Reviewer checklist

• Automated test coverage is satisfactory
• PR is fully functional
• PR has been tested for accessibility regressions
• External dependency files were updated if necessary (yarn and pip)
• Documentation is updated
• Contributor is in AUTHORS.md

[github-actions]

Build Artifacts

Asset type	Download link
PEX file	kolibri-.pex
Windows Installer (EXE)	kolibri-0.17.0b0.dev0+git.11.gc437e8a1-windows-setup-unsigned.exe
Debian Package	kolibri_0.17.0b0.dev0+git.11.gc437e8a1-0ubuntu1_all.deb
Mac Installer (DMG)	kolibri-0.17.0b0.dev0+git.11.gc437e8a1.dmg
Android Package (APK)	kolibri-0.17.0b0.dev0+git.11.gc437e8a1-0.1.3-debug.apk
TAR file	kolibri-0.17.0b0.dev0+git.11.gc437e8a1.tar.gz
WHL file	kolibri-0.17.0b0.dev0+git.11.gc437e8a1-py2.py3-none-any.whl

[pcenov]

Thanks @AlexVelezLl - I confirm that #12430 is fixed now.

[marcellamaki]

lgtm - thank you Alex!

[marcellamaki]

lgtm - thank you Alex!