Fix GraphArea useEffect consistent-return lint issue

Author: Titas-Ghosh

src/GraphArea.jsx

@@ -56,11 +56,12 @@ function Graph({
     }, [active, instance, graphID, dispatcher]);
 
     useEffect(() => {
-        if (!ref.current) return;
-        setContainerDim(ref.current);
         const handleResize = () => setContainerDim(ref.current);
-        window.addEventListener('resize', handleResize);
-        setInstance(initialiseNewGraph());
+        if (ref.current) {
+            setContainerDim(ref.current);
+            window.addEventListener('resize', handleResize);
+            setInstance(initialiseNewGraph());
+        }
         return () => window.removeEventListener('resize', handleResize);
     }, [ref]);