Always retain KML lines and points

wwwroot/js/lme-map.js

@@ -1013,12 +1013,13 @@ function normalizeKmlFiles(files) {
     const parcelSet = new Set(parcels);
     const sheetParts = polygonParts.filter(feature => !parcelSet.has(feature));
     const nonPolygonFeatures = features.filter(feature => geometryPolygons(feature.geometry).length === 0);
-    const optionalFeatures = [...sheetParts, ...nonPolygonFeatures];
-    if (!parcels.length && !(lmeState.includeKmlSheetLayer && optionalFeatures.length)) {
+    const importedFeatures = [...parcels, ...nonPolygonFeatures];
+    const optionalFeatures = sheetParts;
+    if (!importedFeatures.length && !(lmeState.includeKmlSheetLayer && optionalFeatures.length)) {
         throw new Error("nessuna particella trovata; attiva 'includi layer del foglio' per importare gli altri elementi");
     }
     return {
-        geojson: { type: "FeatureCollection", features: parcels },
+        geojson: { type: "FeatureCollection", features: importedFeatures },
         sheetGeojson: {
             type: "FeatureCollection",
             features: lmeState.includeKmlSheetLayer ? optionalFeatures : []