修复Select筛选无法筛选label的问题

package.json

 {
   "name": "way-view-form",
-  "version": "0.2.2",
+  "version": "0.2.3",
   "private": false,
   "author": "flycat",
   "main": "lib/way-view-form.umd.min.js",

src/components/index.vue

@@ -673,6 +673,7 @@ export default {
                     {
                         props: {
                             value: item[propItem.showValue || 'value'],
+                            label: item[propItem.showName || 'label'],
                         },
                     },
                     item[propItem.showName || 'label']