2044590 - Better surface heading levels in Accessibility panel

Status: RESOLVED DUPLICATE of bug 1588784

(DevTools :: Accessibility Tools, enhancement)

Description

[Nicolas Chevobbe [:nchevobbe]]

At the moment, the heading level is a bit hidden in the panel
For a given heading item in the tree, you need to expand the attributes item in the sidebar to see it, where it's in the middle of other properties and could be hard to spot.
We should at least make it part of the "top-level" properties (e.g. below the role: "heading" item)
We could also somehow surface it in the tree (as suggested by Jake in Bug 2044336#c1))
We can't directly replace the current heading text with heading(<level>), as we're displaying the element's role, which is, well, heading.
But, we could do the same as what is planned in Bug 2044336 , have some kind of UI element that would display :heading(<level>) or maybe just level: <level>