Unstable - Copying one or more resources is failing

[pcenov]

Observed behavior

Observed by @radinamatic: Copying one or more resources is failing both from the (new) sidebar/Options menu and the topbar (Make a copy) button
[Vue warn]: Error in v-on handler (Promise/async): "TypeError: siblings[targetNodeIndex] is undefined"

Expected behavior

Fully functional resource copying.

Steps to reproduce the issue

1. Go to https://unstable.studio.learningequality.org/en/accounts/#/ and sign in
2. Open a channel and select one or several folders/resources
3. Click the 'Make a copy' option

Additional information

Usage Details

• OS: Windows 10, Ubuntu
• Browser: Chrome, Firefox
• URL: https://unstable.studio.learningequality.org/
• Caused by: Bulk Edit Release #4635

[pcenov]

@radinamatic

[sentry]

Sentry Issue: STUDIO-HC0

[radinamatic]

Manual QA on the unstable branch confirms the fix.