We were saving the size of the rotated shape bounding box in the docx file
but that size was being interpreted as the size of the original, unrotated
shape.

Now VMLExport::Commit will use the dimensions of the rectangle received as
a parameter to save to the file instead of those returned by SdrAttrObject
->GetSnapRect

Change-Id: I53670db77f5e5320a87579dcd56617d5ccf1851a
Reviewed-on: https://gerrit.libreoffice.org/6432Reviewed-by: Miklos Vajna <vmiklos@collabora.co.uk>
Tested-by: Miklos Vajna <vmiklos@collabora.co.uk>