Austenem/CAT-246 dataset detail workspace updates

Summary

Update menu choices for the workspace buttons in unified views dataset detail pages to allow for both creating and editing workspaces.

Went through both options for both workspace buttons on several dataset pages.

[X] Code follows the project's coding standards
- [X] Lint checks pass locally
- [X] New CHANGELOG-your-feature-name-here.md is present in the root directory, describing the change(s) in full sentences.
[ ] Unit tests covering the new feature have been added
[X] All existing tests pass
[X] Any relevant documentation in JIRA/Confluence has been updated to reflect the new feature
[X] Any new functionalities have appropriate analytics functionalities added