This adds a checkbox in the print dialog to
make it possible to select whether or not to scale the printed
document to the printable area when printing.
QPrinter::setFullPage() is used which makes the print margins
to be ignored in case of the QPrinter based approach
(e.g. "Force rasterization" option enabled).
For the case where FilePrinter is used, the "fit-to-page" option
is (not) passed based on the value that was set.
BUG: 336617