fdo#78590: Fix for Corruption of para with framePr & drawing object into para

Issue:
 - File contains paragraph with framePr have graphic object in it.
 - So Libreoffice converts framePr into textbox.
 - So after saving file textbox gets exported with drawing object.
 - MS office does not allowed drawing object inside tetxbox.

Change-Id: I673e0e9f6681a189bde1c63a8cb7aea2cac0ab41
Fix: - Export framePr into paragraph and igonre exporting of
       dummy textbox added by LO for framePr.
Reviewed-on: https://gerrit.libreoffice.org/9389
Reviewed-by: Miklos Vajna <vmiklos@collabora.co.uk>
Tested-by: Miklos Vajna <vmiklos@collabora.co.uk>