fix: fix cancel article scheduling causes the lost of original proper…

…ties - EXO-75716 - Meeds-io/meeds#2639 (#335)

Prior to this change, when cancel a scheduled article with properties
and continue as draft, the new created draft doesn't conserve the
original article properties because a wrong passed param in the
properties object which doesn't indicate that the properties are belong
to a draft.
This PR fixes the issue by forcing to set the right needed param in the
properties object when create a draft that comes from unschedule action

content-service/src/main/java/io/meeds/news/service/impl/NewsServiceImpl.java

@@ -770,6 +770,9 @@ public News scheduleNews(News news, Identity currentIdentity, String newsObjectT
   public News unScheduleNews(News news, String pageOwnerId, String articleCreator) throws Exception {
     News existingNews = getNewsArticleById(news.getId());
     if (existingNews != null) {
+      if (news.getProperties() != null) {
+        news.getProperties().setDraft(true);
+      }
       news = createDraftArticleForNewPage(news, pageOwnerId, articleCreator, System.currentTimeMillis());
       deleteArticle(existingNews, articleCreator);
       return buildDraftArticle(news.getId(), articleCreator);
@@ -2166,4 +2169,3 @@ private void updateArticlePermissions(List<Space> spaces, News article, List<Str
     NewsUtils.broadcastEvent(NewsUtils.UPDATE_CONTENT_PERMISSIONS, this, updateContentPermissionEventListenerData);
   }
 }
-

content-service/src/test/java/io/meeds/news/service/impl/NewsServiceImplTest.java

@@ -939,7 +939,8 @@ public void testUnScheduleNews() throws Exception {
     News newsArticle = mock(News.class);
     when(newsArticle.getId()).thenReturn("1");
     when(newsArticle.getBody()).thenReturn("body");
-
+    when(newsArticle.getProperties()).thenReturn(new NotePageProperties());
+
     DraftPage draftPage = mock(DraftPage.class);
     when(draftPage.getUpdatedDate()).thenReturn(new Date());
     when(draftPage.getCreatedDate()).thenReturn(new Date());