Navigation Submenu Block: Make block name affect list view (#58296)

* Navigation Submenu Block: Make block name affect list view

* Fix e2e test

Author: t-hamano

packages/block-library/src/navigation-submenu/index.js

@@ -21,16 +21,23 @@ export const settings = {
 		if ( context === 'list-view' ) {
 			return page;
 		}
-
 		return addSubmenu;
 	},
+	__experimentalLabel( attributes, { context } ) {
+		const { label } = attributes;
 
-	__experimentalLabel: ( { label } ) => label,
+		const customName = attributes?.metadata?.name;
 
-	edit,
+		// In the list view, use the block's menu label as the label.
+		// If the menu label is empty, fall back to the default label.
+		if ( context === 'list-view' && ( customName || label ) ) {
+			return attributes?.metadata?.name || label;
+		}
 
+		return label;
+	},
+	edit,
 	save,
-
 	transforms,
 };