Improve visibility of buttons for data owners

[TaniaSchlatter]

As part of adding "Compute" buttons and features for Cloud Dataverse, changes were made to the UI to differentiate sets of buttons. User feedback on the changes indicated that the buttons for data owners (edit or "write" buttons) may look inactive.

Consolidated user feedback doc: https://docs.google.com/document/d/1WZxbQKfa6utStJxBSU8toPJZWAvlgqlJX19VZedrBu4/edit

Related GitHub issue: #3747

[mheppler]

Highly related/duplicate of UI Cleanup - Action Button + Metrics Block Layout #3341