Fixed cannot read property 'newLabelName' of undefined (#3517)

* Fixed issue

* Added CHANGELOG, increased version

CHANGELOG.md

@@ -25,6 +25,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Fixed
 
+- Fixed multiple tasks moving (<https://github.com/openvinotoolkit/cvat/pull/3517>)
 - Fixed task creating CLI parameter (<https://github.com/openvinotoolkit/cvat/pull/3519>)
 
 ### Security

cvat-ui/package-lock.json

 {
   "name": "cvat-ui",
-  "version": "1.21.2",
+  "version": "1.21.3",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {

cvat-ui/package.json

 {
   "name": "cvat-ui",
-  "version": "1.21.2",
+  "version": "1.21.3",
   "description": "CVAT single-page application",
   "main": "src/index.tsx",
   "scripts": {

cvat-ui/src/components/move-task-modal/move-task-modal.tsx

@@ -34,8 +34,8 @@ export default function MoveTaskModal(): JSX.Element {
     const [labelMap, setLabelMap] = useState<{ [key: string]: LabelMapperItemValue }>({});
 
     const initValues = (): void => {
+        const labelValues: { [key: string]: LabelMapperItemValue } = {};
         if (task) {
-            const labelValues: { [key: string]: LabelMapperItemValue } = {};
             task.labels.forEach((label: any) => {
                 labelValues[label.id] = {
                     labelId: label.id,
@@ -43,8 +43,8 @@ export default function MoveTaskModal(): JSX.Element {
                     clearAttributes: true,
                 };
             });
-            setLabelMap(labelValues);
         }
+        setLabelMap(labelValues);
     };
 
     const onCancel = (): void => {