fdo#77089 if font width 0, pass 0 - don't take it from font metric

Conflicts:
	vcl/source/filter/wmf/winmtf.cxx

Change-Id: I6c73da1d2470e75774affda836a8d587eebfbe4b
fdo#77089 if available, use ext. dimensions for non-placable WMF

Change-Id: Idcfaa127ed6abed40d6eec7f81fbbfb36658cc91