Nanosvg assumes that an unspecified stroke width is 1px, whereas the SVG
specification specifies it should be read as 0px. This causes problems
when scaling factors are applied to 0px lines, leading to them being
misinterpeted by our import.
This commit fixes the nanosvg assumption by setting the initial stroke
width to 0 instead of 1px.
Fixes: https://gitlab.com/kicad/code/kicad/-/issues/13353
Kliment
jean-pierre charras
Ian McInerney