Leading Checkboxes should be configured to be skipped for tab traversal

[dsanagustin]

We require a DataTable2 with a leading checkbox to take only 1 tab to go between rows. Currently, one tab selects the entire row. The next selects the checkbox.

In our use case, the onPressed callback affects the state of the checkbox. We would like the checkbox to be skipped during tab traversal, but DataTable2 cannot be configured this way.