fix(editor): can not select the block after undo the drag from canvas to note (#12473)

Close [BS-3509](https://linear.app/affine-design/issue/BS-3509/embed拖入note，然后撤销，形成的block刷新后才可选中，且只能进行有限交互)

### Before

https://github.com/user-attachments/assets/4c83f9ba-1a99-427f-824d-7e946e55e737

### After

https://github.com/user-attachments/assets/e6a28478-0af4-4358-a353-e0c2e8edb0f9

<!-- This is an auto-generated comment: release notes by coderabbit.ai -->

## Summary by CodeRabbit

- **Bug Fixes**
	- Improved block selection reliability after dragging a block into a note and performing an undo action, ensuring the block remains selectable.

- **Tests**
	- Added an end-to-end test to verify block selection after dragging and undo operations in edgeless mode.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

blocksuite/affine/widgets/drag-handle/src/watchers/drag-event-watcher.ts

@@ -710,6 +710,7 @@ export class DragEventWatcher {
     dropPayload: DropPayload,
     point: Point
   ) => {
+    this.std.store.captureSync();
     if (this.mode === 'edgeless') {
       this._onEdgelessDrop(dropBlock, dragPayload, dropPayload, point);
     } else {