Add comprehensive tests for DataView

[jordankoschei-okta]

This PR adds test coverage for DataView, attempting to be comprehensive but not overwhelming.

For simplicity, most of the tests use an example data set of 7 characters from Star Wars (7 being an easy enough number of items to reason about).

I've tried to avoid adding data-testid wherever possible, opting for implicit attributes like aria-label instead. However, in a few circumstances, adding a test id was the most efficient route; in those cases, I used data-testid.

Due to the way DataView loads data, I've needed to make heavy use of waitFor and await to detect when the component is truly ready to be tested. In many instances, the tests were receiving a false positive that the table was ready, even though it was empty. I used a few different ways to validate that the test was ready, based on the circumstance:

• Detect if more than 1 row has loaded (tables always have 1 row loaded, representing the thead row)
• Detect if the text of the first data item is present, indicating that the data has been loaded in

List of tests

Display modes

1. displays a table view
2. displays a list view
3. displays a grid view
4. displays the layout switcher

Auxiliary controls

5. can display meta text
6. can filter rows
7. can search rows
8. can clear the search input
9. can display row action menu
10. can display row action buttons

Table-specific options

11. can sort rows
12. can change row density
13. can change column visibility
14. can resize columns

Row selection

15. can select table rows
16. can select card rows
17. can select all rows
18. can deselect rows
19. can deselect all rows
20. can perform bulk actions on rows

Row reordering

21. can reorder rows
22. can reorder to front
23. can reorder to back

Row expansion

24. can expand table rows
25. can expand card rows

Additional states

26. can display empty state
27. can display no-results state

Pagination

28. displays paged pagination
29. displays loadMore pagination
30. can load more rows via loadMore pagination
31. can go to the next page
32. can go to the previous page
33. can disable the next page button based on max rows