fix(workspace): open edit panel for PAGE_LAYOUT sidebar items (#23293)

Fixes #22649.

Custom page-layout links in the sidebar (like "Star History") couldn't
be removed. Clicking them in edit mode did nothing.

**Root cause**

`handleNavigationMenuItemClick` in `WorkspaceSection.tsx` switches on
`item.type`. `FOLDER` and `LINK` have explicit cases that call
`openNavigationMenuItemInSidePanel`. `PAGE_LAYOUT` fell through to
`default`, which calls `openViewOrRecordEditPanelAndNavigate`. That
function only opens the side panel when `objectMetadataItem` is defined
- PAGE_LAYOUT items don't have one - so the panel never opened.

**Fix**

Add a `PAGE_LAYOUT` case that calls `openNavigationMenuItemInSidePanel`
directly, using the item's own label and icon. Same pattern as `LINK`.

**How to test**

1. Create a custom page link in the sidebar (Settings > Workspace > Add
menu item > Page layout).
2. Click the wrench icon to enter edit mode.
3. Click the custom page item - the edit side panel should now open.
4. Verify you can remove it from the sidebar.


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---------

Co-authored-by: prastoin <paul@twenty.com>

packages/twenty-front/src/modules/navigation-menu-item/display/sections/workspace/components/WorkspaceSection.tsx

@@ -152,6 +152,14 @@ export const WorkspaceSection = () => {
           pageIcon: IconLink,
         });
         break;
+      case NavigationMenuItemType.PAGE_LAYOUT:
+        openNavigationMenuItemInSidePanel({
+          pageTitle:
+            getNavigationMenuItemLabel(item, objectMetadataItems, views) ||
+            t`Edit page`,
+          pageIcon: getIcon(item.icon),
+        });
+        break;
       default:
         openViewOrRecordEditPanelAndNavigate(item, objectMetadataItem);
     }

packages/twenty-front/src/modules/navigation-menu-item/edit/hooks/useSelectedNavigationMenuItemEditItemLabel.ts

@@ -19,6 +19,8 @@ const getLabelForItem = (
       return item.name ?? 'Folder';
     case NavigationMenuItemType.LINK:
       return item.name ?? 'Link';
+    case NavigationMenuItemType.PAGE_LAYOUT:
+      return item.name ?? 'Page';
     case NavigationMenuItemType.OBJECT:
     case NavigationMenuItemType.VIEW:
       return (