Merge pull request #1220 from lowcoder-org/fix/renameapp

fix rename issue

Author: FalkWolsky

server/api-service/lowcoder-domain/src/main/java/org/lowcoder/domain/application/model/Application.java

@@ -179,6 +179,8 @@ public Map<String, Object> getEditingApplicationDSL() {
         return dsl;
     }
 
+    public Map<String, Object> getEditingApplicationDSLOrNull() {return editingApplicationDSL; }
+
     public Object getLiveContainerSize() {
         return liveContainerSize.get();
     }

server/api-service/lowcoder-server/src/main/java/org/lowcoder/api/application/ApplicationApiServiceImpl.java

@@ -344,7 +344,7 @@ public Mono<ApplicationView> update(String applicationId, Application applicatio
 
     private Mono<Application> doUpdateApplication(String applicationId, Application application) {
         Application applicationUpdate = Application.builder()
-                .editingApplicationDSL(application.getEditingApplicationDSL())
+                .editingApplicationDSL(application.getEditingApplicationDSLOrNull())
                 .name(application.getName())
                 .build();
         return applicationService.updateById(applicationId, applicationUpdate)