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

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)