Fix reordering of items when moved to top or bottom
What does this MR do?
Fixes a bug where moving an item from issues list under an Epic caused JS error.
Does this MR meet the acceptance criteria?
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Changelog entry added, if necessary [ ] Documentation created/updated[ ] API support added-
Tests added for this feature/bug - Review
[ ] Has been reviewed by UX-
Has been reviewed by Frontend [ ] Has been reviewed by Backend[ ] Has been reviewed by Database
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Conform by the merge request performance guides -
Conform by the style guides -
Squashed related commits together [ ] Internationalization required/considered[ ] If paid feature, have we considered GitLab.com plan and how it works for groups and is there a design for promoting it to users who aren't on the correct plan
What are the relevant issue numbers?
Closes #4587 (closed)
Edited by Kushal Pandya