## 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
inspectPath={inspectStatePath}
            overrideValueFn={overrideStateFn}
            pathRoot="state"
          />
        )}
        <HooksTree canEditHooks={canEditHooks} hooks={hooks} id={id} />
        <InspectedElementTree
          label={hasLegacyContext ? 'legacy context' : 'context'}
          data={context}
          inspectPath={inspectContextPath}
          overrideValueFn={overrideContextFn}
          pathRoot="context"
        />
        <NativeStyleEditor />
        {ownerID === null && owners !== null && owners.length > 0 && (
          <div className={styles.Owners}>
            <div className={styles.OwnersHeader}>rendered by</div>
            {owners.map(owner => (
              <OwnerView
                key={owner.id}
                displayName={owner.displayName || 'Anonymous'}
                hocDisplayNames={owner.hocDisplayNames}
                id={owner.id}
                isInStore={store.containsElement(owner.id)}
                type={owner.type}
              />
            ))}
          </div>
        )}
        {source !== null && (