Fix StoriesGroup

[GermanVor]

No description provided.

[gravity-ui-bot]

Preview is ready.

[GermanVor]

as you can see in Storybook (open last stories or make custom property like this

[
  {
    "items": [
      {
        "title": "New navigation",
        "description": "At the top of the panel is the service navigation for each service. Below are common navigation elements: a component for switching between accounts and organizations, settings, help center, search, notifications, favorites.",
        "url": "https://yandex.eu",
        "media": {
          "url": "https://storage.yandexcloud.net/uikit-storybook-assets/story-picture-2.png"
        }
      }
    ]
  },
  {
    "items": [
      {
        "title": "New navigation (2)",
        "description": "Switch to the new navigation right now",
        "media": {
          "url": "https://storage.yandexcloud.net/uikit-storybook-assets/story-picture-4.png"
        }
      }
    ]
  },
  {
    "items": [
      {
        "title": "New navigation (3)",
        "description": "Switch to the new navigation right now",
        "media": {
          "url": "https://storage.yandexcloud.net/uikit-storybook-assets/story-picture-4.png"
        }
      }
    ]
  }
]

)

StoriesGroup is broken cause of hasSteps value.
I get rid of this property.