* CB-6296 fix: delete keystroke marks selected row for deletion
* CB-6296 fix: focus first element on load, remove extra handler
It was noticed that just after the open, onKeyDown event doesn't reach DataGrid, because focus was not in sync with lib.
Also fixes CB-6229 since they have the same root problem with encountered bag
* CB-6286 refactor: change onCellKeyDown handler interface inside DataGridProps
* CB-6296 refactor: set initial focus differently
* CB-6296 refactor: remove manual scroll control
We use grid inner scrollToCell method and don't need additional native scrolling
* refactor: don't expose inner data-grid type
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Co-authored-by: Evgenia <139753579+EvgeniaBzzz@users.noreply.github.com>
Co-authored-by: Alexey <wrouds@gmail.com>
