fix(sider-menu): missing breakpoint (#33)

Author: ElderJames

src/layout/src/SiderMenu/SiderMenu.razor

@@ -7,6 +7,7 @@
     Style="@SiderStyle"
     Width="SiderWidth"
     Theme="SiderTheme"
+    Breakpoint="@Breakpoint"
     Class="@ClassMapper.Class">
     <!--header-->
     @if (HeaderDom != null)