## The current behavior

The full value of the `key` is very difficult / impossible to find and use in the interface of the React Devtools.

![Kapture 2020-04-22 at 11 47 47](https://user-images.githubusercontent.com/1935696/79997715-25222680-84ba-11ea-97ba-51f1679a8c91.gif)

Only managed to find it by accident :(

## The expected behavior

The `key` is visible in the props list to the right.

### Detailed Proposal

As mentioned below in https://github.com/facebook/react/issues/18702#issuecomment-617924196

Add a light divider and new section in the props panel to the right.

Potentially also add a question mark that shows an explanation about the fact that things in this section are not really props.

Ref (Original implementation): https://github.com/facebook/react-devtools/pull/328
import HooksTree from './HooksTree';
import {ModalDialogContext} from '../ModalDialog';
import HocBadges from './HocBadges';
import InspectedElementTree from './InspectedElementTree';
import {InspectedElementContext} from './InspectedElementContext';
import ViewElementSourceContext from './ViewElementSourceContext';
import NativeStyleEditor from './NativeStyleEditor';
import Toggle from '../Toggle';
import Badge from './Badge';
import {useHighlightNativeElement} from '../hooks';
import {
  ComponentFilterElementType,
  ElementTypeClass,
  ElementTypeForwardRef,
  ElementTypeFunction,
  ElementTypeMemo,
  ElementTypeSuspense,
} from 'react-devtools-shared/src/types';
import styles from './SelectedElement.css';
import type {ContextMenuContextType} from '../context';
import type {
  CopyInspectedElementPath,
  GetInspectedElementPath,
  InspectedElementContextType,
  StoreAsGlobal,
} from './InspectedElementContext';
import type {Element, InspectedElement} from './types';
import type {ElementType} from 'react-devtools-shared/src/types';
export type Props = {||};
export default function SelectedElement(_: Props) {