[BUG] adding custom Node shape broken

[lakhoune]

The current problem lies in the ineffective functioning of adding a customNode shape. The issue arises due to an exception within the bootstrap modal code library. This problem appears to be connected to the button's anchor, specifically the data attribute bsTarget="#editor-modal", which lacks uniqueness in the document.

To address this, the solution involves using the bs function to generate a new Modal. This approach eliminates reliance on the data-bs-target attribute, resolving the issue with adding customNode shapes.