feat: 支持外部重置大小监听器

src/components/grid.vue

@@ -189,7 +189,7 @@
             }
         },
         methods: {
-            resetWatchBoxSize(){
+            resetReSize(){
                 this.boxWatchHandler.destroy();
                 this.boxWatchHandler = new watchBoxSize(this.$el, () => {
                     this.initCols();