SQLite must keep AI incremented after rollback

[mvorisek]

related discussion: https://stackoverflow.com/questions/692856/set-start-value-for-autoincrement-in-sqlite

needed for atk4/ui#2032

[mvorisek]

It seems the only way is to increment the AI counters before any rollback/savepoint rollback - https://dbfiddle.uk/6Fbnb-b5