Allow Label to set button component without onClick

Describe the enhancement or change
Currently, in order for a clickable Label to render with the button element in the DOM is to pass an onClick handler to it. There may be use cases where an onClick isn't desired - one example being the new Canvas pattern in Chatbot where a clickable Label opens a Popover. In this case the Popover is passed the Label as a child (rather than using triggerRefs and the Label's onClick to dictate the Popover open state).

Allowing Label to set a button element could help in those sorts of scenarios, instead of needing to pass a triggerRef, onClick to Label, and onHidden to Popover (which may result in some funky focus behavior).

Is this request originating from a Red Hat product team? If so, which ones and is there any sort of deadline for this enhancement?

Any other information?
Not blocking as there is a workaround of setting role and tabindex on a normal Label, but it lacks some focus styles and it would be better for us to support this internally with native elements.

Jira Issue: PF-4637

Start at the Label component and its existing tests, then trace how the rendered element changes when onClick is provided. Define the supported way to request a button without onClick, and verify that the Label renders a native button with the expected focus behavior while existing usage remains unchanged.