!1135 bpm流程图预览高亮显示错误

Merge pull request !1135 from Lesan/feature/bpm

yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/framework/flowable/core/util/BpmnModelUtils.java

@@ -321,9 +321,9 @@ public class BpmnModelUtils {
         }
         Map<Integer, BpmTaskRespVO.OperationButtonSetting> buttonSettings = Maps.newHashMapWithExpectedSize(extensionElements.size());
         extensionElements.forEach(element -> {
-            String id = element.getAttributeValue(FLOWABLE_EXTENSIONS_NAMESPACE, BUTTON_SETTING_ELEMENT_ID_ATTRIBUTE);
-            String displayName = element.getAttributeValue(FLOWABLE_EXTENSIONS_NAMESPACE, BUTTON_SETTING_ELEMENT_DISPLAY_NAME_ATTRIBUTE);
-            String enable = element.getAttributeValue(FLOWABLE_EXTENSIONS_NAMESPACE, BUTTON_SETTING_ELEMENT_ENABLE_ATTRIBUTE);
+            String id = element.getAttributeValue(null, BUTTON_SETTING_ELEMENT_ID_ATTRIBUTE);
+            String displayName = element.getAttributeValue(null, BUTTON_SETTING_ELEMENT_DISPLAY_NAME_ATTRIBUTE);
+            String enable = element.getAttributeValue(null, BUTTON_SETTING_ELEMENT_ENABLE_ATTRIBUTE);
             if (StrUtil.isNotEmpty(id)) {
                 BpmTaskRespVO.OperationButtonSetting setting = new BpmTaskRespVO.OperationButtonSetting();
                 buttonSettings.put(Integer.valueOf(id), setting.setDisplayName(displayName).setEnable(Boolean.parseBoolean(enable)));