**Do you want to request a *feature* or report a *bug*?**

Feature.

**What is the current behavior?**

The new DevTools doesn't show the component file path as did the v3 version.

**What is the expected behavior?**

It would be great to show the component file path, it's a really important feature when working in a large codebase.

**Which versions of React, and which browser / OS are affected by this issue? Did this work in previous versions of React?**

React DevTools v4 is affected, v3 had it.

() => {
      if (viewElementSourceFunction != null && inspectedElement !== null) {
        viewElementSourceFunction(
          inspectedElement.id,
          ((inspectedElement: any): InspectedElement),
        );
      }
    },
    [inspectedElement, viewElementSourceFunction],
  );
  
  
  const canViewSource =
    inspectedElement !== null &&
    inspectedElement.canViewSource &&
    viewElementSourceFunction !== null &&
    (canViewElementSourceFunction === null ||
      canViewElementSourceFunction(inspectedElement));
  const isSuspended =
    element !== null &&
    element.type === ElementTypeSuspense &&
    inspectedElement != null &&
    inspectedElement.state != null;
  const canToggleSuspense =
    inspectedElement != null && inspectedElement.canToggleSuspense;
  
  const toggleSuspended = useCallback(
    () => {
      let nearestSuspenseElement = null;
      let currentElement = element;