fdo#41109 RTF shape import: shpz has priority over dhgt

And not the other way around, how
24ee3df385cf2aa95cd888581c84fdf90cc682dc (RTF import: fix priority
handling of shpz vs dhgt, 2012-04-10) did, this time with a reproducer.

Change-Id: I9412341c6b35ca2760e4490a18f11bc6a0e0b78a
(cherry picked from commit ff7ac1a9b82bc20fe6e3d82322e53a7024edb84f)
fdo#41109 RTF shape import: handle fBehindDocument property

Change-Id: I9bf24eb2d3087e855d54c0ee7aba4e98dc856cc2
(cherry picked from commit e8d10f215e9da65617988a9a471be18775afad00)