message: Minor style fixes.
diff: @@ -217,7 +217,7 @@ const DefaultHeader: React.FC<DialogHeaderProps> = ({dialogLabelId, title, subti
  return (
  <Dialog.Header>
  <Flex>
  - <Flex pt={2} flexDirection="column" flexGrow={1}>
  + <Flex px={2} py="6px" flexDirection="column" flexGrow={1}>
  <Dialog.Title id={dialogLabelId}>{title ?? 'Dialog'}</Dialog.Title>
  {subtitle && <Dialog.Subtitle id={dialogDescriptionId}>{subtitle}</Dialog.Subtitle>}
  </Flex>
  @@ -299,7 +299,7 @@ _Dialog.displayName = 'Dialog'
  const Header = styled(Box).attrs({as: 'header'})`
  box-shadow: 0 1px 0 ${get('colors.border.overlay')};
  - padding: 6px 6px 14px ${get('space.3')};
  + padding: ${get('space.2')};
  z-index: 1;
  flex-shrink: 0;
  `
  