fix: Fix page history version bug

Author: lu-yg

base/src/main/java/com/tinyengine/it/service/app/impl/PageServiceImpl.java

@@ -379,7 +379,7 @@ public Result<Page> updatePage(Page page) {
         pageHistory.setPage(pageTemp.getId());
         pageHistory.setId(null);
         pageHistory.setIsPublished(false);
-        pageHistory.setVersion("draft");
+        pageHistory.setVersion("0");
         int resultPageHistory = pageHistoryService.createPageHistory(pageHistory);
         if (resultPageHistory < 1) {
             return Result.failed(ExceptionEnum.CM001);