Quiz Creation Select Resources- Accessibility Improvement

[AllanOXDi]

Overview

The current keyboard navigation in the Resource Selection does not select the resources. When the checkbox is in focus, pressing the Enter key does nothing while navigating through topic cards and exercises.

https://github.com/learningequality/kolibri/assets/103313919/5faf62ec-b35f-417d-b482-62b6b8160f8e