fix:fix tabs overflow in dashboards

Author: LevisNgigi

superset-frontend/src/dashboard/components/DashboardBuilder/DashboardBuilder.tsx

@@ -426,7 +426,9 @@ const DashboardBuilder = () => {
     isReport;
 
   const [barTopOffset, setBarTopOffset] = useState(0);
-  const [currentFilterBarWidth, setCurrentFilterBarWidth] = useState(0);
+  const [currentFilterBarWidth, setCurrentFilterBarWidth] = useState(
+    CLOSED_FILTER_BAR_WIDTH,
+  );
 
   useEffect(() => {
     setBarTopOffset(headerRef.current?.getBoundingClientRect()?.height || 0);