Clipboard doesn't always show correct channel thumbnail

Observed behavior

If I copy a resource to clipboard through the 'Import from channels' modal, the channel's thumbnail seems to show up in the clipboard panel. If I copy to clipboard through alternative ways, it doesn't.

Expected behavior

The correct thumbnail for a channel shows in the clipboard panel.

User-facing consequences

The thumbnails help users identify the channels in the clipboard. The user could copy many items from many channels, so this visual indicator helps the user navigate visually.

Additional information

Steps to reproduce the issue

1. Browse the content library
2. Open a public channel with a thumbnail / logo
3. Copy a node to the clipboard
4. Open the clipboard
5. See the channel does not have the appropriate thumbnail / logo

Usage Details

• Browser: Chrome
• URL: Hotfixes server -- Rebranding release
• Other information that may be relevant:

Originally posted by @bjester in https://github.com/learningequality/studio/issues/4539#issuecomment-2085560796

Start by reproducing the issue through the content library, the Import from channels modal, and the clipboard panel, comparing copied nodes with the channel thumbnail or logo. Done means the clipboard panel shows the correct channel thumbnail regardless of how the resource was copied.