Can coded workflow be set to private when creating a library?

I am using the Studio-2023.10.0 version. While trying to create a library project, I used a coded workflow (.cs file) to complete some core functionalities.

Then, in the low-code workflow, I used the “Invoke Workflow File” activity to call this .cs file and completed the entire functionality. After publishing, I noticed that both the low-code sequence-generated activity and the coded workflow-generated activity appeared in the activity panel. This led me to discover that the coded workflow cannot be set as private in Studio, as there is no such option.

So, I wanted to know if this is a bug? Perhaps it has been implemented or fixed in a later version of Studio?