Fix "Invalid prop" error

[MisRob]

Summary

Fixes "Invalid prop: custom validator check failed for prop 'value' error by removing what appears to be, as best as I can say, the obsolete 'channels' object property that is not passed into and neither used in the component.

References

Fixes #13058

Reviewer guidance

Note there is The computed property "PageNames" is already defined in data warning in the browser console - will fix in another PR.

QA

• Go to Coach -> Lesson -> Manage resources -> rewrite /lessons to /lessonstemp URL and in the "Manage lesson resources", click on the Search button (make sure you see the new experience)

• Check that there is no "Invalid prop" error in the browser console
• There should be no regressions in the side panel

Code

• 'channels' is really not needed anywhere?

[github-actions]

Build Artifacts

Asset type	Download link
PEX file	kolibri-0.18.0a2.dev0_git.2.gcff09adc.pex
Windows Installer (EXE)	kolibri-0.18.0a2.dev0+git.2.gcff09adc-windows-setup-unsigned.exe
Debian Package	kolibri_0.18.0a2.dev0+git.2.gcff09adc-0ubuntu1_all.deb
Mac Installer (DMG)	kolibri-0.18.0a2.dev0+git.2.gcff09adc.dmg
Android Package (APK)	kolibri-0.18.0a2.dev0+git.2.gcff09adc-0.1.4-debug.apk
Raspberry Pi Image	kolibri-pi-image-0.18.0a2.dev0+git.2.gcff09adc.zip
TAR file	kolibri-0.18.0a2.dev0+git.2.gcff09adc.tar.gz
WHL file	kolibri-0.18.0a2.dev0+git.2.gcff09adc-py2.py3-none-any.whl

[radinamatic]

Specific Invalid prop: custom validator check failed for prop 'value' error seems to have been fixed, tested in Chrome and Firefox on Ubuntu. Some other errors and warns are present in the console, but no UX regressions.

Firefox	Chrome

Misaligned category icons are reported elsewhere, I believe...

[radinamatic]

Looking good, thank you! 💯 🎉