message: fix(Banner): Check actions prop emptiness
  If you pass an empty array to actions prop, the component renders empty .Banner__actions div
diff: -import { FunctionComponent, ReactNode, HTMLAttributes, MouseEventHandler } from 'react';
  +import { Children, FunctionComponent, ReactNode, HTMLAttributes, MouseEventHandler } from 'react';
  import { getClassName } from '../../helpers/getClassName';
  import { classNames } from '../../lib/classNames';
  import { usePlatform } from '../../hooks/usePlatform';
  @@ -124,7 +124,7 @@ const Banner: FunctionComponent<BannerProps> = (props: BannerProps) => {
  {hasReactNode(header) && renderHeader({ size, header })}
  {hasReactNode(subheader) && renderSubheader({ size, subheader })}
  {hasReactNode(text) && <Text weight="regular" vkuiClass="Banner__text">{text}</Text>}
  - {actions &&
  + {hasReactNode(actions) && Children.count(actions) > 0 &&
  <div vkuiClass="Banner__actions">{actions}</div>
  }
  </div>
  