fix(react): add missing argument and fix incorrect types

Author: Hristo Hristov

packages/cli/templates/react/igr-ts/doughnut-chart/default/files/src/app/__path__/__filePrefix__.tsx

@@ -24,8 +24,8 @@ const data: any = [
 export default function $(ClassName)() {
   const title = 'Doughnut Chart';
   const [chartData, setChartData] = useState([]);
-  const legendRef: any = useRef();
-  const chartRef: any = useRef();
+  const legendRef: any = useRef(null);
+  const chartRef: any = useRef(null);
 
   useEffect(() => {
     setChartData(data);

packages/cli/templates/react/igr-ts/grid/basic/files/src/app/__path__/__filePrefix__.tsx

@@ -25,27 +25,27 @@ export default function $(ClassName)() {
             <IgrColumn
               field="ProductID"
               header="Product ID"
-              dataType="Number">
+              dataType="number">
             </IgrColumn>
             <IgrColumn
               field="ProductName"
               header="Product Name"
-              dataType="String">
+              dataType="string">
             </IgrColumn>
             <IgrColumn
               field="QuantityPerUnit"
               header="Quantity Per Unit"
-              dataType="String">
+              dataType="string">
             </IgrColumn>
             <IgrColumn
               field="UnitsInStock"
               header="Units In Stock"
-              dataType="Number">
+              dataType="number">
             </IgrColumn>
             <IgrColumn
               field="OrderDate"
               header="Order Date"
-              dataType="Date">
+              dataType="date">
             </IgrColumn>
           </IgrGrid>
         </div>

packages/cli/templates/react/igr-ts/pie-chart/default/files/src/app/__path__/__filePrefix__.tsx

@@ -19,8 +19,8 @@ const data: any = [
 export default function $(ClassName)() {
   const title = 'Pie Chart';
   const [chartData, setChartData] = useState([]);
-  const legendRef: any = useRef();
-  const chartRef: any = useRef();
+  const legendRef: any = useRef(null);
+  const chartRef: any = useRef(null);
 
   useEffect(() => {
     setChartData(data);