fix(Tabs): disable drag event registration in non-drag scenarios (#3738)

Author: RSS1102

src/tabs/tab-nav.tsx

@@ -365,9 +365,10 @@ export default mixins(classPrefixMixins, getGlobalIconMixins()).extend({
   },
   mounted() {
     this.$nextTick(() => {
-      const { setNavsWrap } = handleDragSort(this.$props);
-      setNavsWrap(this.$refs.navsWrap as HTMLDivElement);
-
+      if (this.dragSort) {
+        const { setNavsWrap } = handleDragSort(this.$props);
+        setNavsWrap(this.$refs.navsWrap as HTMLDivElement);
+      }
       this.watchDomChange();
       this.calculateNavBarStyle();
       this.getMaxScrollLeft();