修正table render的组件中无法获取this.$store的问题

在table的render中生成的组件，组件内部无法通过this.$store来获取vuex对象

src/components/table/cell.vue

@@ -96,6 +96,9 @@
                             },
                             components: components
                         });
+                        if ($parent.$store != undefined) {
+                            component.$store = $parent.$store;
+                        }
                         component.row = this.row;
                         component.column = this.column;