Read dev-dep react-scripts too when called on CRA projects

[Sidnioulz]

Closes #22794

What I did

Added support for readinv devDependencies too

How to test

1. Create a new CRA project: npx create-react-app my-app && cd my-app
2. Init storybook node /path-to-sb/code/lib/cli/bin/index.js init
3. Notice nothing crashes

Checklist

NOTE: I am unsure if this requires a dedicated test or not.

• Make sure your changes are tested (stories and/or unit, integration, or end-to-end tests)
• Make sure to add/update documentation regarding your changes
• If you are deprecating/removing a feature, make sure to update
  MIGRATION.MD

Maintainers

• If this PR should be tested against many or all sandboxes,
  make sure to add the ci:merged or ci:daily GH label to it.
• Make sure this PR contains one of the labels below.

["bug"]

[ndelangen]

This PR will likely get superseded by #22642 don't you think @valentinpalkovic

[valentinpalkovic]

Very likely. Nevertheless, I would like to keep this open to see, whether the issue gets resolved after my PR got merged.

[valentinpalkovic]

Closing, since it is fixed here: https://github.com/storybookjs/storybook/pull/22642/files#diff-9305f6962a92f45ede95181bc8aeaeb5e0bf20a3d66f2aadeb7713d2391aac16L28

Nevertheless, @Sidnioulz Thank you for your effort in putting this PR together!