Remove incorrect @ts-expect-error directive from ObjectKanban.tsx

The @ts-expect-error directive was unnecessary since KanbanSchema already defines cardTitle property. This was causing a TypeScript compile error for unused directive. Updated comment to clarify this is a backwards compatibility fallback.

Co-authored-by: hotlong <50353452+hotlong@users.noreply.github.com>

Author: Copilot

packages/plugin-kanban/src/ObjectKanban.tsx

@@ -101,7 +101,7 @@ export const ObjectKanban: React.FC<ObjectKanbanProps> = ({
     if (!Array.isArray(rawData)) return [];
 
     // Support cardTitle property from schema (passed by ObjectView)
-    // @ts-expect-error - cardTitle might not be in KanbanSchema type definition yet
+    // Fallback to legacy titleField for backwards compatibility
     let titleField = schema.cardTitle || (schema as any).titleField;
 
     // Fallback: Try to infer from object definition