fix types in couple Vue demos

Author: GoodDayForSurf

apps/demos/Demos/Charts/MultipleAxes/Vue/App.vue

@@ -70,7 +70,7 @@ function customizeTooltip(pointInfo: DxChartTypes.PointInfo) {
   const items = pointInfo.valueText?.split('\n');
   const color = pointInfo.point?.getColor();
 
-  items?.forEach((item, index) => {
+  items?.forEach((item: string, index: number) => {
     if (item.indexOf(pointInfo.seriesName) === 0) {
       const element = document.createElement('span');
 

apps/demos/Demos/Diagram/ItemSelection/Vue/App.vue

@@ -46,7 +46,7 @@ const textExpression = 'Full_Name';
 function onContentReady(e: DxDiagramTypes.ContentReadyEvent) {
   const diagram = e.component;
   // preselect some shape
-  const items = diagram.getItems().filter(({ itemType, dataItem }) => itemType === 'shape' && (dataItem[textExpression] === 'Greta Sims'));
+  const items = diagram.getItems().filter(({ itemType, dataItem }: DxDiagramTypes.Item) => itemType === 'shape' && (dataItem[textExpression] === 'Greta Sims'));
   if (items.length > 0) {
     diagram.setSelectedItems(items);
     diagram.scrollToItem(items[0]);