## 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
}
    };
    overrideStateFn = (path: Array<string | number>, value: any) => {
      const rendererID = store.getRendererIDForElement(id);
      if (rendererID !== null) {
        bridge.send('overrideState', {id, path, rendererID, value});
      }
    };
  } else if (
    (type === ElementTypeFunction ||
      type === ElementTypeMemo ||
      type === ElementTypeForwardRef) &&
    canEditFunctionProps
  ) {
    overridePropsFn = (path: Array<string | number>, value: any) => {
      const rendererID = store.getRendererIDForElement(id);
      if (rendererID !== null) {
        bridge.send('overrideProps', {id, path, rendererID, value});
      }
    };
  } else if (type === ElementTypeSuspense && canToggleSuspense) {
    overrideSuspenseFn = (path: Array<string | number>, value: boolean) => {
      if (path.length !== 1 && path !== IS_SUSPENDED) {
        throw new Error('Unexpected path.');
      }
      const rendererID = store.getRendererIDForElement(id);
      if (rendererID !== null) {
        bridge.send('overrideSuspense', {
          id,
          rendererID,