Suppresses unnecessary fill-rule attribute in SVG (#1397)

src/renderer/renderElement.ts

@@ -426,7 +426,11 @@ export function renderElementToSvg(
             offsetY || 0
           }) rotate(${degree} ${cx} ${cy})`,
         );
-        if (element.type === "line") {
+        if (
+          element.type === "line" &&
+          isPathALoop(element.points) &&
+          element.backgroundColor !== "transparent"
+        ) {
           node.setAttribute("fill-rule", "evenodd");
         }
         group.appendChild(node);