不让全屏loading挡住聊天框

src/components/common/LoadingFlag.vue

@@ -14,7 +14,7 @@
   left: 0;
   right: 0;
   bottom: 0;
-  z-index: 99999;
+  z-index: 1500;
   background: rgba(0, 0, 0, 0.3);
   .loading-content {
     width: 140px;