群解散时，无论在群组中的哪个页面，都退回到会话列表页面

pages/im/group/apply.vue

@@ -20,8 +20,12 @@
         joinGroupPre,
         joinGroup
     } from '@/apis/interfaces/im.js'
-
-    export default {
+    import onGroupDismiss from '@/utils/im/onGroupDismiss.js'
+    
+    export default {
+        mixins: [
+            onGroupDismiss
+        ],
         data() {
             return {
                 targetId: '',
@@ -45,7 +49,7 @@
                     mask: true,
                     duration: 3000
                 })
-            })
+            })
         },
         methods: {
             toGroupChat() {