Clean up extra attributes set in `clipboard_button` helper

Context

The following discussion from !53224 (merged) should be addressed:

• @pslaughter started a discussion:

  note (non-blocking): It seems to me that there's a lot of extraneous things we leave in this object we're passing to data (i.e. class and hide_tooltip). When we read these values, I think we intend to pop them out of the object so they don't end up written to the HTML as data attributes (i.e. data-class) 🤔

  This is a pre-existing problem, so it shouldn't block this MR but might be nice to clean up in a follow-up.

On .com, you'll notice clipboard buttons have weird data attributes because of this:

Investigation Notes

In the clipboard_button helper, we could probably just use .delete instead of reading the various keys so that the keys are also removed and not added to the element's data attributes.