Pagination items not activated by pressing "space"

[monotasker]

Package version (if known): 13.x

Describe the bug

When navigating by keyboard, focused pagination page items are not activated when "space" is pressed. Only when "enter" is pressed.

Steps to Reproduce

1. Go to any search result display
2. Use tab to focus one of the pagination component's page links via keyboard
3. Press "space"
4. Nothing happens

Expected behavior

According to ARIA APG button elements should be activated by both "space" and "enter" when focused: https://www.w3.org/WAI/ARIA/apg/patterns/button/

Screenshots (if applicable)

Additional context

This may be an issue with the underlying react-semantic-ui component, which may be an example of an accessibility issue that needs remediation in the underlying widgets.