fix logic bug deactive router

Author: Fxdonad

src/app/features/excercise/exercise-pages/code-submission/code-submission.component.ts

@@ -129,7 +129,7 @@ export class CodeSubmissionComponent {
 
   canDeactivate(): Observable<boolean> {
     if (!this.codeEditorComponent.getCode()) return of(true);
-    if (this.codeEditorComponent.getCode()) {
+    if (this.codeEditorComponent.getCode() && !this.submitted) {
       return this.modalNoticeService.confirm(
         'Xác nhận thoát',
         'Bạn có chắc muốn thoát? Dữ liệu sẽ mất.',

src/app/shared/store/modal-notice-state/modal-notice.service.ts

@@ -15,6 +15,7 @@ export class ModalNoticeService {
     confirmText: string,
     cancelText: string
   ): Observable<boolean> {
+    this.decision$ = new Subject<boolean>();
     this.store.dispatch(
       openNoticeModal({
         payload: {