Describe the bug

The !autodocs tag still displays the story as a preview of the component if it is the first story in the file. If the story is moved after the first one, it is completely hidden as expected.

Expected behavior: The !autodocs tag should hide the story completely from the documentation, regardless of its location within the file.

Reproduction Repo

Reproduction link

https://68e7c3607e6dc5d3051d143e-zfywlhkgqk.chromatic.com/?path=/docs/example-button--docs

Reproduction steps

1. Add tag: [!autodocs] to the first story in the code.
2. In the component documentation, the preview of the component is the story to which we just added !autodocs.

System

➜  storybook-docs-issue git:(main) ✗ npx storybook@latest info

Storybook Environment Info:

  System:
    OS: macOS 26.0
    CPU: (8) arm64 Apple M1 Pro
    Shell: 5.9 - /bin/zsh
  Binaries:
    Node: 22.20.0 - ~/.nvm/versions/node/v22.20.0/bin/node
    npm: 10.9.3 - ~/.nvm/versions/node/v22.20.0/bin/npm <----- active
    pnpm: 10.17.1 - /opt/homebrew/bin/pnpm
  Browsers:
    Chrome: 141.0.7390.56
    Safari: 26.0
  npmPackages:
    @storybook/addon-docs: ^9.1.10 => 9.1.10
    @storybook/preset-create-react-app: ^9.1.10 => 9.1.10
    @storybook/react-webpack5: ^9.1.10 => 9.1.10
    eslint-plugin-storybook: ^9.1.10 => 9.1.10
    storybook: ^9.1.10 => 9.1.10

Additional context

The story will be hidden under "STORIES" in the docs, but it is still shown as a preview if it's the first story in the file.