[MusicXML import] word-font not imported
Old regression. Was implemented but disabled by Werner in the "replace TextStyle by SubStyle" migration in commit 5433d71 on Jan 16, 2017.
See "#if 0 // TODO:ws" in function updateStyles() in score/importmxmlpass1.cpp.
As lyric-font is imported but word-font is not, MusicXML files with non-standard font settings look weird after import. E.g. when the MusicXML file specifies jazz fonts, only the lyrics will use such a font after import.