[Feature Request]: Keep Searchbox open to import multiple nodes

### Is there an existing issue for this?

- [X] I have searched the existing issues and checked the recent builds/commits

### What would your feature do ?

When using the Searchbox via double-click or shortcut, it currently closes automatically after selecting a node. While this might be convenient in some cases, it can also be restrictive when you're in the building process and want to explore multiple options.

For instance, if you've filtered search results by keyword, or specific node, input or output types, you may want to import several nodes that match your criteria. However, everytime the Searchbox is closed, all your filtering is lost; you have to re-enter the same keywords and filters every time you reopen it. This can be frustrating and inefficient.

While you can use the Node Library to find and import multiple nodes, using the Searchbox during the building process often feels more intuitive and natural. It would be helpful to have the option to keep the Searchbox open after selecting a node, allowing you to continue searching, filtering, and importing additional nodes.

### Proposed workflow

* Open Searchbox using double-click or shortcut
* Find specific node types by searching and filtering
* Choose one or more nodes to add them to your workflow
* Click on canvas to close Searchbox when done

### Additional information

_No response_

┆Issue is synchronized with this [Notion page](https://www.notion.so/Issue-2004-Feature-Request-Keep-Searchbox-open-to-import-multiple-nodes-1636d73d365081f5952acc8d225aea9a) by [Unito](https://www.unito.io)