## 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
if (element === null) {
    return (
      <div className={styles.SelectedElement}>
        <div className={styles.TitleRow} />
      </div>
    );
  }
  return (
    <div className={styles.SelectedElement}>
      <div className={styles.TitleRow}>
        <div className={styles.SelectedComponentName}>
          <div className={styles.Component} title={element.displayName}>
            {element.displayName}
          </div>
        </div>
        {canToggleSuspense && (
          <Toggle
            className={styles.IconButton}
            isChecked={isSuspended}
            onChange={toggleSuspended}
            title={
              isSuspended
                ? 'Unsuspend the selected component'
                : 'Suspend the selected component'
            }>
            <ButtonIcon type="suspend" />
          </Toggle>
        )}
        {store.supportsNativeInspection && (
          <Button