PATCH: To update table dialog column definition

Fixed.

Remaining issue,

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We are using Switch cell to select Not NULL & Is primary key options.

But as per Backgrid design we are not allowed to enter in edit mode directly for BooleanCell (like we can for NumberCell) from which we are Inherited our Switch cell, so user have to click once on this cell to go into edit mode then only they can use keyborad to toggle the values of switch cell.

I'll check with Ashesh if we can fix this issue.