dashArray doesn't work in canvas when it's space-separated

[IvanSanchez]

Adding a canvas-rendered polyline/polygon with dashArray containing space-separated numbers, e.g.:

L.polyline([[0, 0], [40, 10]], {
  dashArray: "4 4",
  renderer: L.canvas()
}).addTo(map);

The line doesn't get dashes but shows solid instead.

See https://plnkr.co/edit/xHfZHNDhded1VaIdae1K?p=preview

The browser documentation for SVG dashArray specifies, emphasis mine:

a list of comma and/or white space separated <length>s and <percentage>s that specify the lengths of alternating dashes and gaps.