DOCX import: handle NS_sprm::LN_CFSmallCaps == 0 after NS_sprm::LN_CFCaps

"caps and no smallcaps" means style::CaseMap::UPPERCASE, not
style::CaseMap::NONE. Different XML elements in DOCX, single UNO
property.

Change-Id: I8cbc719f2c307d5d2cbd4af93ea61e35b640ad1d