Add missing displayName to PageHeader.TitleArea and PageHeader.Parent…

…Link (#4736)

* Add missing displayName to PageHeader.TitleArea

* Add missing displayName to PageHeader.ParentLink

packages/react/src/PageHeader/PageHeader.tsx

@@ -238,6 +238,7 @@ const ParentLink = React.forwardRef<HTMLAnchorElement, ParentLinkProps>(
     )
   },
 ) as PolymorphicForwardRefComponent<'a', ParentLinkProps>
+ParentLink.displayName = 'ParentLink'
 
 // ContextBar
 // Generic slot for any component above the title region. Use it for custom breadcrumbs and other navigation elements instead of ParentLink.
@@ -337,6 +338,7 @@ const TitleArea = React.forwardRef<HTMLDivElement, React.PropsWithChildren<Title
     )
   },
 ) as PolymorphicForwardRefComponent<'div', TitleAreaProps>
+TitleArea.displayName = 'TitleArea'
 
 // PageHeader.LeadingAction and PageHeader.TrailingAction should only be visible on regular viewports.
 // So they come as hidden on narrow viewports by default and their visibility can be managed by their `hidden` prop.