Block Editor: Ensure that uncategorized block types are properly handled (#30125)

Author: gziolo

packages/block-editor/src/components/inserter/block-types-tab.js

@@ -112,7 +112,7 @@ export function BlockTypesTab( {
 				);
 			} ) }
 
-			{ ! uncategorizedItems.length && (
+			{ uncategorizedItems.length > 0 && (
 				<InserterPanel
 					className="block-editor-inserter__uncategorized-blocks-panel"
 					title={ __( 'Uncategorized' ) }