fix: close docs bulk toolbar after delete (#14711)

### Before 
https://www.loom.com/share/a626b23f29cb4a48b33d721341d734f8

### After

https://www.loom.com/share/0c88ef4f92ac470fbb76608e2de43fa7


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

* **Bug Fixes**
* Fixed floating toolbar remaining visible after deleting multiple
documents via the confirmation dialog so it reliably closes when
deletion completes.

* **Tests**
* Added end-to-end checks to verify the floating toolbar is dismissed
after multi-item and “select all” deletions.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

---------

Co-authored-by: DarkSky <25152247+darkskygit@users.noreply.github.com>

packages/frontend/core/src/components/explorer/docs-view/docs-list.tsx

@@ -198,6 +198,7 @@ export const DocsExplorer = ({
           const doc = docsService.list.doc$(docId).value;
           doc?.moveToTrash();
         }
+        handleCloseFloatingToolbar();
       },
     });
   }, [