Adding a dragenter handler

src/components/map/Map.tsx

@@ -114,6 +114,11 @@ const Map: Component = () => {
     importUrls(event.dataTransfer.files);
   };
 
+  const dragEnterHandler = (event: any) => {
+    event.preventDefault();
+    console.log({ caller: 'Map / dragEnterHandler', event });
+  };
+
   const dragOverHandler = (event: any) => {
     event.preventDefault();
     console.log({ caller: 'Map / dragOverHandler', event });
@@ -314,6 +319,7 @@ const Map: Component = () => {
       ref={target}
       ondrop={dropHandler}
       ondragover={dragOverHandler}
+      ondragenter={dragEnterHandler}
     >
       <Updater />
       <Invitation />