feat: enhance canvas components with clientRequestId for optimistic updates

- Added clientRequestId to various canvas components to support optimistic UI updates during node creation and manipulation.
- Updated the canvas command palette, toolbar, and node components to generate unique clientRequestIds for better tracking of user actions.
- Enhanced the canvas placement context to handle clientRequestId for improved correlation between optimistic and real node IDs.
- Refactored node duplication and creation logic to utilize clientRequestId, ensuring smoother user interactions and state management.

components/canvas/canvas-toolbar.tsx

@@ -34,6 +34,7 @@ export default function CanvasToolbar({
       width,
       height,
       data,
+      clientRequestId: crypto.randomUUID(),
     });
   };