fix(menu): fix menu icon style

src/layouts/default/header/LayoutMultipleHeader.less

@@ -1,6 +1,9 @@
 .multiple-tab-header {
   flex: 0 0 auto;
-  margin-left: -1px;
+
+  &.dark {
+    margin-left: -1px;
+  }
 
   &.fixed {
     position: fixed;

src/layouts/default/header/LayoutMultipleHeader.tsx

@@ -29,6 +29,7 @@ export default defineComponent({
       getShowFullHeaderRef,
       getShowHeader,
       getUnFixedAndFull,
+      getHeaderTheme,
     } = useHeaderSetting();
 
     const { getFullContent } = useFullContent();
@@ -110,7 +111,7 @@ export default defineComponent({
           {unref(getIsShowPlaceholderDom) && <div style={unref(getPlaceholderDomStyle)} />}
           <div
             style={unref(getWrapStyle)}
-            class={['multiple-tab-header', { fixed: unref(getIsFixed) }]}
+            class={['multiple-tab-header', unref(getHeaderTheme), { fixed: unref(getIsFixed) }]}
           >
             {unref(getShowInsetHeaderRef) && <LayoutHeader ref={headerElRef} />}
             {unref(showTabsRef) && <MultipleTabs ref={tabElRef} />}