Refactor the list edit components into functional components and add a loading indicator for the list items
Always show the export tab, disable the button if we have not loaded the list items yet
Testing instructions
Load a list with more than 10 items. Verify that all 10 items appear.
Verify that a loading indicator appears on the /items section while loading the items
Verify the export tab appears instantly along with the Sites and Details tabs
Load the export tab directly on a long list and a slow network. Verify that the button is disabled while the list items load and enabled once loaded if there are items in the list.
Unfortunately, no screenshots were provided by the developer.