refactor(handle): only listen to left click events closes #1852

src/components/Handle/index.tsx

@@ -76,6 +76,7 @@ const Handle = forwardRef<HTMLDivElement, HandleComponentProps>(
 
     const onMouseDownHandler = useCallback(
       (event: React.MouseEvent) => {
+        if (event.button === 0) {
           onMouseDown(
             event,
             handleId,
@@ -91,6 +92,7 @@ const Handle = forwardRef<HTMLDivElement, HandleComponentProps>(
             onConnectStop,
             onConnectEnd
           );
+        }
       },
       [
         handleId,