Resolve "Pasting an image into a comment also uploads design"

What does this MR do?

This MR limits upload-by-paste functionality to DesignManagement application only. Now, to upload a design with paste, you would need to hover the designs.

Screenshots

Does this MR meet the acceptance criteria?

Conformity

• Changelog entry
• Documentation (if required)
• Code review guidelines
• Merge request performance guidelines
• Style guides
• Database guides
• Separation of EE specific content

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: #229588 (closed)