前端：增项申请审批----退回按钮loading

src/dashoo.cn/frontend_web/src/pages/oilsupplier/addtionaudit/_opera/basisdataopera.vue

@@ -715,7 +715,7 @@
       </el-form>
       <span slot="footer" class="dialog-footer">
         <el-button size="mini" @click="dialogVisibleBack = false">取 消</el-button>
-        <el-button size="mini" type="primary" @click="backEntity">确定</el-button>
+        <el-button size="mini" type="primary" @click="backEntity" :loading="btnLoading">确定</el-button>
       </span>
     </el-dialog>
 

src/dashoo.cn/frontend_web/src/pages/oilsupplier/addtionaudit/_opera/goodsdataopera.vue

@@ -801,7 +801,7 @@
       </el-form>
       <span slot="footer" class="dialog-footer">
         <el-button size="mini" @click="dialogVisibleBack = false">取 消</el-button>
-        <el-button size="mini" type="primary" @click="backEntity">确定</el-button>
+        <el-button size="mini" type="primary" @click="backEntity" :loading="btnLoading">确定</el-button>
       </span>
     </el-dialog>
 

src/dashoo.cn/frontend_web/src/pages/oilsupplier/addtionaudit/_opera/techdataopera.vue

@@ -699,7 +699,7 @@
       </el-form>
       <span slot="footer" class="dialog-footer">
         <el-button size="mini" @click="dialogVisibleBack = false">取 消</el-button>
-        <el-button size="mini" type="primary" @click="backEntity">确定</el-button>
+        <el-button size="mini" type="primary" @click="backEntity" :loading="btnLoading">确定</el-button>
       </span>
     </el-dialog>