fix: menu grp item style missing (#38525)

components/menu/__tests__/__snapshots__/demo-extend.test.ts.snap

@@ -1482,6 +1482,88 @@ Array [
         </div>
       </div>
     </li>
+    <li
+      class="ant-menu-item-group"
+    >
+      <div
+        class="ant-menu-item-group-title"
+        title="Group"
+      >
+        Group
+      </div>
+      <ul
+        class="ant-menu-item-group-list"
+      >
+        <li
+          class="ant-menu-item ant-menu-item-only-child"
+          role="menuitem"
+          style="padding-left:24px"
+          tabindex="-1"
+        >
+          <span
+            class="ant-menu-title-content"
+          >
+            Option 13
+          </span>
+        </li>
+        <div>
+          <div
+            class="ant-tooltip ant-menu-inline-collapsed-tooltip"
+            style="opacity:0"
+          >
+            <div
+              class="ant-tooltip-content"
+            >
+              <div
+                class="ant-tooltip-arrow"
+              >
+                <span
+                  class="ant-tooltip-arrow-content"
+                />
+              </div>
+              <div
+                class="ant-tooltip-inner"
+                role="tooltip"
+              />
+            </div>
+          </div>
+        </div>
+        <li
+          class="ant-menu-item ant-menu-item-only-child"
+          role="menuitem"
+          style="padding-left:24px"
+          tabindex="-1"
+        >
+          <span
+            class="ant-menu-title-content"
+          >
+            Option 14
+          </span>
+        </li>
+        <div>
+          <div
+            class="ant-tooltip ant-menu-inline-collapsed-tooltip"
+            style="opacity:0"
+          >
+            <div
+              class="ant-tooltip-content"
+            >
+              <div
+                class="ant-tooltip-arrow"
+              >
+                <span
+                  class="ant-tooltip-arrow-content"
+                />
+              </div>
+              <div
+                class="ant-tooltip-inner"
+                role="tooltip"
+              />
+            </div>
+          </div>
+        </div>
+      </ul>
+    </li>
   </ul>,
   <div
     aria-hidden="true"
@@ -1751,6 +1833,50 @@ Array [
         </div>
       </div>
     </div>
+    <div>
+      <div
+        class="ant-tooltip ant-menu-inline-collapsed-tooltip"
+        style="opacity:0"
+      >
+        <div
+          class="ant-tooltip-content"
+        >
+          <div
+            class="ant-tooltip-arrow"
+          >
+            <span
+              class="ant-tooltip-arrow-content"
+            />
+          </div>
+          <div
+            class="ant-tooltip-inner"
+            role="tooltip"
+          />
+        </div>
+      </div>
+    </div>
+    <div>
+      <div
+        class="ant-tooltip ant-menu-inline-collapsed-tooltip"
+        style="opacity:0"
+      >
+        <div
+          class="ant-tooltip-content"
+        >
+          <div
+            class="ant-tooltip-arrow"
+          >
+            <span
+              class="ant-tooltip-arrow-content"
+            />
+          </div>
+          <div
+            class="ant-tooltip-inner"
+            role="tooltip"
+          />
+        </div>
+      </div>
+    </div>
   </div>,
 ]
 `;

components/menu/__tests__/__snapshots__/demo.test.ts.snap

@@ -512,6 +512,44 @@ Array [
         />
       </div>
     </li>
+    <li
+      class="ant-menu-item-group"
+    >
+      <div
+        class="ant-menu-item-group-title"
+        title="Group"
+      >
+        Group
+      </div>
+      <ul
+        class="ant-menu-item-group-list"
+      >
+        <li
+          class="ant-menu-item ant-menu-item-only-child"
+          role="menuitem"
+          style="padding-left:24px"
+          tabindex="-1"
+        >
+          <span
+            class="ant-menu-title-content"
+          >
+            Option 13
+          </span>
+        </li>
+        <li
+          class="ant-menu-item ant-menu-item-only-child"
+          role="menuitem"
+          style="padding-left:24px"
+          tabindex="-1"
+        >
+          <span
+            class="ant-menu-title-content"
+          >
+            Option 14
+          </span>
+        </li>
+      </ul>
+    </li>
   </ul>,
   <div
     aria-hidden="true"

components/menu/demo/inline.tsx

@@ -39,6 +39,8 @@ const items: MenuProps['items'] = [
     getItem('Option 11', '11'),
     getItem('Option 12', '12'),
   ]),
+
+  getItem('Group', 'grp', null, [getItem('Option 13', '13'), getItem('Option 14', '14')], 'group'),
 ];
 
 const App: React.FC = () => {

components/menu/style/vertical.tsx

@@ -70,6 +70,13 @@ const getVerticalStyle: GenerateStyle<MenuToken> = token => {
     boxShadowSecondary,
   } = token;
 
+  const inlineItemStyle: CSSObject = {
+    height: menuItemHeight,
+    lineHeight: `${menuItemHeight}px`,
+    listStylePosition: 'inside',
+    listStyleType: 'disc',
+  };
+
   return [
     {
       [componentCls]: {
@@ -144,18 +151,15 @@ const getVerticalStyle: GenerateStyle<MenuToken> = token => {
           borderRadius: 0,
           boxShadow: 'none',
 
-          [`& > ${componentCls}-item,
-             & > ${componentCls}-submenu > ${componentCls}-submenu-title`]: {
-            height: menuItemHeight,
-            lineHeight: `${menuItemHeight}px`,
-            listStylePosition: 'inside',
-            listStyleType: 'disc',
-          },
+          [`& > ${componentCls}-submenu > ${componentCls}-submenu-title`]: inlineItemStyle,
 
           [`& ${componentCls}-item-group-title`]: {
             paddingInlineStart: paddingXL,
           },
         },
+
+        // >>>>> Item
+        [`${componentCls}-item`]: inlineItemStyle,
       },
     },