msc: fields popup onclick

frontend/src/components/MapComponent.vue

@@ -145,19 +145,21 @@ export default {
       const popup = new maplibregl.Popup({
         closeButton: false,
         closeOnClick: false,
-      });
+      })
 
-      map.value.on("mouseover", "fields-layer", (e) => {
-        map.value.getCanvas().style.cursor = "pointer";
-        popup
+      map.value.on("click", "fields-layer", (e) => {
+        new maplibregl.Popup({})
           .setLngLat(e.lngLat)
           .setHTML(e.features[0].properties["descriptio"])
           .addTo(map.value);
       })
 
+      map.value.on("mouseover", "fields-layer", (e) => {
+        map.value.getCanvas().style.cursor = "pointer";
+      })
+
       map.value.on("mouseleave", "fields-layer", (e) => {
         map.value.getCanvas().style.cursor = "";
-        popup.remove();
       })
 
       map.value.on("mouseover", "samples-layer", (e) => {