message页面销毁时清除messageStore缓存

src/views/message/MessageLayout.vue

@@ -1,6 +1,6 @@
 <!-- eslint-disable prettier/prettier -->
 <script setup>
-import { ref, onMounted, computed, watch, nextTick } from 'vue'
+import { ref, onMounted, onUnmounted, computed, watch, nextTick } from 'vue'
 import { 
   Phone, 
   VideoCamera, 
@@ -80,6 +80,10 @@ onMounted(async () => {
   if (userData.curSessionId) pullMsg()  //页面加载进来,如果缓存了sessionId,则要加载对话
 })
 
+onUnmounted(() => {
+  messageData.clear()
+})
+
 const handleMsgListScroll = async () => {
   if (msgListDiv.value.scrollTop === 0) {
     const scrollHeight = msgListDiv.value.scrollHeight