Possible unexpected behavior when navigating CreatorEditor using keyboard

[Smeds]

The pull request "Workflow license and creator edit keyboard access #18936" introduces keyboard navigation for the CreatorEditor, which works. However, I encountered an possible unexpected behavior. When I select the 'Add attribute' ListSelector element and press either the 'Down Arrow' or 'Right Arrow' key, the top-most item in the list is added automatically, without giving me the opportunity to choose which element to add.

Galaxy Version and/or server at which you observed the bug
test.galaxyproject.org 24.2

Browser and Operating System
Operating System: Linux
Browser: Firefox, Chrome

To Reproduce
Steps to reproduce the behavior:

1. Select 'Add attribute'
2. Press Arrows keys (Right or Down)

Expected behavior
I would expect the selection list to be opened when I use the arrow keys, but that's maybe not the expected behavior.

Screenshots

The following Attributes in the CreatorEditor is added when I press keys "Down Key" and "Right Key"

• Given Name
• Family Name
• Identifier (typically an orcid.org ID

Additional context
Add any other context about the problem here.