Issues #186: fix, The sidevar needs to close when the button is pressed.

src/views/MainContainer.vue

@@ -60,6 +60,8 @@ export default {
   beforeRouteUpdate(to, from, next) {
     // 離開 Discover 頁時判斷是否有無資料和需要存檔
     if ((from.name === 'Map') && this.tempFilterId) {
+      // 傳給 Map，通知 Sidebar 要關閉。
+      this.$emitter.emit('leaveFilter', false);
       leaveFilter(next, this.allMapDataStore.addFilterId, to.path)
     } else {
       next();