I am not the original poster, but I use lit-html to make the interactive elements on the page like tabs and modals. Then I use HTMX to load the contents of those elements when the tab or trigger is clicked.
I find things like actions is great for conditionally showing and hiding form fields or small things like that, but if you want to have accessible tabs and modals it is best to bundle it up in a component. Here is an example of a lit components I use, https://codepen.io/megaman821/pen/GRXmzZb and https://codepen.io/megaman821/pen/dydvxBE