## 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
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    internalInstance._currentElement === null ||
    internalInstance._currentElement === false
  ) {
    
  } else if (internalInstance._renderedComponent) {
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    if (getElementType(child) !== ElementTypeOtherOrUnknown) {
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    }
  } else if (internalInstance._renderedChildren) {
    const renderedChildren = internalInstance._renderedChildren;
    for (const name in renderedChildren) {
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      if (getElementType(child) !== ElementTypeOtherOrUnknown) {
        children.push(child);
      }
    }
  }
  
  
  return children;
}
export function attach(