For the target admin.customer-index.selection-action.render in Admin UI Extensions, when I select all customers (i.e., more than 50), the data returned by useApi(TARGET) only includes the 50 customers currently visible on the page. There’s no way to determine whether the user selected just those 50 or actually selected all customers.
I understand that returning all customers at once may not be feasible for performance reasons, but there should be some indication—such as pagination info or a flag—to signal that the “Select All” action applies beyond the current page.
