message: Header: clean up markup
diff: @@ -79,20 +79,14 @@ const Header: FC<HeaderProps> = ({
  <header
  {...restProps}
  ref={getRootRef}
  - vkuiClass={classNames(
  - getClassName('Header', platform),
  - `Header--mode-${mode}`, {
  - 'Header--pi': isPrimitiveReactNode(indicator),
  - },
  - )}
  + vkuiClass={classNames(getClassName('Header', platform), `Header--mode-${mode}`, { 'Header--pi': isPrimitiveReactNode(indicator) })}
  >
  <div vkuiClass="Header__main">
  <HeaderContent vkuiClass="Header__content" Component="h3" mode={mode} platform={platform}>
  - <span vkuiClass={classNames('Header__content-in', {
  - 'Header__content-in--multiline': multiline,
  - })}>{children}</span>
  + <span vkuiClass={classNames('Header__content-in', { 'Header__content-in--multiline': multiline })}>{children}</span>
  {hasReactNode(indicator) && <Caption Component="span" vkuiClass="Header__indicator" weight="regular" level="1">{indicator}</Caption>}
  </HeaderContent>
  +
  {hasReactNode(subtitle) && <Caption Component="span" vkuiClass="Header__subtitle" weight="regular" level="1">{subtitle}</Caption>}
  </div>
  