解决导入数据时，弹窗无法关闭的问题

src/views/ComposeEmail.vue

@@ -221,6 +221,7 @@
       @error="handleImportError"
       @confirm="handleImportContacts"
       @close="showImportContacts = false"
+      @cancel="showImportContacts = false"
     />
     <!-- 联系人选择弹窗 -->
     <ContactSelector
@@ -229,6 +230,7 @@
       @confirm-selection="confirmContactSelection"
       @query-change="remoteSearch($event, 'contacts')"
       @close="showContactSelector = false"
+      @cancel="showContactSelector = false"
     />
 
     <!-- 变量选择弹窗 -->