fix(ui): 右上角头像 hover 去除背景圈

- 移除 .gerp-user-info:hover 背景色，hover 不再出现边框圈

src/layouts/DefaultLayout.vue

@@ -571,11 +571,6 @@ const isFaIcon = (icon: string | undefined | null): boolean => {
   cursor: pointer;
   padding: 0 8px;
   border-radius: 6px;
-  transition: background 0.2s;
-
-  &:hover {
-    background: var(--el-fill-color-light);
-  }
 }
 
 .gerp-user-avatar {