Fixing up copy button in scratchpad modal (`6.0`).

[dennisoelkers]

Description

Motivation and Context

This PR is performing the required changes to adjust #19665 so that it works without #18874 being merged to 6.0 before. This fixes the Copy-button in the scratchpad modal.

Fixes #19822.

How Has This Been Tested?

Screenshots (if appropriate):

Types of changes

• [x] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Refactoring (non-breaking change)
• [ ] Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• [x] My code follows the code style of this project.
• [ ] My change requires a change to the documentation.
• [ ] I have updated the documentation accordingly.
• [x] I have read the CONTRIBUTING document.
• [ ] I have added tests to cover my changes.