fix(UI测试): ui命令分类下拉框报错

frontend/src/store/index.js

@@ -41,6 +41,7 @@ const state = {
   selectCommand: {},
   //按照type分组的指令
   groupedCmd: {},
+  selectUiGroup: '',
   librarySelectElement: {},
   uiElementLibraryModuleIds: null,
   refreshUiScenario: false,

frontend/src/store/mutations.js

@@ -27,6 +27,7 @@ const mutations = {
   setGroupedCmd: (state, value) => state.groupedCmd = value,
   setUiElementLibraryModuleIds: (state, value) => state.uiElementLibraryModuleIds = value,
   setRefreshUiScenario: (state, value) => state.refreshUiScenario = value,
+  setSelectUiGroup: (state, value) => state.selectUiGroup = value,
 }
 
 export default mutations;