[DevTools] Clear element inspection if host element not owned by any renderer is selected

[eps1lon]

Stacked on #35503

If you click outside a React root in the Elements panel, we want to give eedback that no selection is possible so we clear the selection. Otherwise clicking outside a React root is indistinguishable from clicking a different host node that leads to the same selected React element due to Component filters.

Test plan

1. Open a document where not all DOM nodes are rendered by React e.g. https://react.new/
2. Select a DOM node owned by React
3. Select a DOM node not owned by React

CleanShot.2026-01-13.at.19.22.50.mp4

1. Open a document where not all DOM nodes are rendered by React e.g. https://react.new/
2. Open Components panel
3. inspect element
4. Open Elements panel (should clear inspection since the selected host node is not owned by React)

CleanShot.2026-01-13.at.20.02.00.mp4