fix groupMode regression caused due to default value flip (#15627)

packages/twenty-front/src/modules/page-layout/widgets/graph/graphWidgetBarChart/components/GraphWidgetBarChart.tsx

@@ -70,7 +70,7 @@ export const GraphWidgetBarChart = ({
   yAxisLabel,
   id,
   layout = 'vertical',
-  groupMode = 'grouped',
+  groupMode,
   seriesLabels,
   rangeMin,
   rangeMax,

packages/twenty-front/src/modules/page-layout/widgets/graph/graphWidgetBarChart/utils/getEffectiveGroupMode.ts

@@ -8,9 +8,9 @@ export const getEffectiveGroupMode = (
     return undefined;
   }
 
-  if (groupMode === 'STACKED') {
-    return 'stacked';
+  if (groupMode === 'GROUPED') {
+    return 'grouped';
   }
 
-  return 'grouped';
+  return 'stacked';
 };