fix: userInfo中头像高宽比不应被改变

src/components/userInfo.vue

@@ -52,6 +52,7 @@ export default {
     border-radius: 50%;
     border: 1px solid rgba(0, 0, 0, 0.05);
     margin-right: 8px;
+    object-fit: cover;
   }
   .nickName {
     color: #323233;