Resolve "Error when quickly reordering designs"

What does this MR do?

This MR blocks an ability to reorder designs when there is an ongoing moveDesign mutation call. This prevents not adjacent error on design reordering

Does this MR meet the acceptance criteria?

Conformity

• Changelog entry
• Documentation (if required)
• Code review guidelines
• Merge request performance guidelines
• Style guides

Availability and Testing

• Review and add/update tests for this feature/bug. Consider all test levels. See the Test Planning Process.
• Tested in all supported browsers
• Informed Infrastructure department of a default or new setting change, if applicable per definition of done

Issue #237923 (closed)