## 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
context: hydrateHelper(context),
            hooks: hydrateHelper(hooks),
            props: hydrateHelper(props),
            state: hydrateHelper(state),
          };
          element = store.getElementByID(id);
          if (element !== null) {
            const request = inProgressRequests.get(element);
            if (request != null) {
              inProgressRequests.delete(element);
              batchedUpdates(() => {
                request.resolveFn(inspectedElement);
                setCurrentlyInspectedElement(inspectedElement);
              });
            } else {
              resource.write(element, inspectedElement);
              
              if (id === selectedElementID) {
                setCurrentlyInspectedElement(inspectedElement);
              }
            }
          }
          break;
        default:
          break;
      }
    };
    bridge.addListener('inspectedElement', onInspectedElement);
    return () => bridge.removeListener('inspectedElement', onInspectedElement);
  }, [bridge, currentlyInspectedElement, selectedElementID, store]);