TableView: fix styleData.row to be a binding
TableView: fix styleData.row to be a binding

Must be a binding to keep the index up-to-date when moving rows.

Task-number: QTBUG-38789
Change-Id: Ibd2fe34d7afccc523d563351bd3366c7c7c66635
Reviewed-by: Andy Shaw <1b3aaee2e61471279b5521e026ecc46624436cc4@digia.com>
Reviewed-by: Gabriel de Dietrich <57b5c683f0b6abfc17ef151d5b68c8944258b63a@digia.com>
Reviewed-by: Caroline Chao <cb6a0059f4e516e853a34cb558c25ca5a9bcf4ab@digia.com>

mizukusak/qtquickcontrols,mizukusak/qtquickcontrols,mizukusak/qtquickcontrols