Slideshow resource cards don't indicate a learning activity in title and thumbnail areas

Observed behavior

There is no “Read” learning activity label and icon in the card title area and the generic thumbnail (displayed when a resource has no thumbnail) is empty instead of showing a dimmed “Read” learning activity icon. This was first observed on cards in the library (compare with other cards):

This is likely related to the invalid property Vue warning showing in the browser console [Vue warn]: Invalid prop: custom validator check failed for prop "kind"

Errors and logs

Expected behavior

• there is “Read” learning activity icon and label in the title area
• there is “Read” learning activity icon in the generic thumbnail area
• no Vue warning in the browser console

User-facing consequences

Users can’t determine learning activities associated with slideshow resources, but note @radina’s message:

For the context, the slideshow type of resource was a prototype developed by @nucleogenesis a few years ago, but it did not go further from that prototype stage. As far as I know, slideshow resource can only be made with Ricecooker, and that item in the QA channel is the only instance of a slideshow resource that exists on Studio.

Steps to reproduce

1. Import the Kolibri QA Channel by using nakav-mafak token
2. Navigate to “Learn” -> “Library” -> “Kolibri QA Channel”
3. Go to “HTML5” sub-folder in the “Folders” tab in the side panel
4. Scroll down to see the “Slides Slides Slides!” resource card

Context

• Kolibri version: Kolibri 0.15.1.dev0+git.20220125194959
• Operating system: Ubuntu 20.04.3 LTS
• Browser: Chrome 97.0.4692.99 (Official Build) (64-bit)

[MisRob]

@radinamatic I also added your comment to “User-facing consequences” sections of this issue as well as to #9044

[MisRob]

@jtamiace Thank you, I’m updating the issue description with this information @radinamatic Thank you, I think it’d make sense to lower priority then