fix(core-common): fix missing env at StorybookConfig

[zigang93]

Closes #21733

What I did

add missing env at StorybookConfig from error:

Type '{ stories: string[]; staticDirs: string[]; addons: string[]; core: { disableTelemetry: true; }; framework: { name: "@storybook/nextjs"; options: { strictMode: true; }; }; docs: { defaultName: string; autodocs: true; }; env: (config: any) => any; }' is not assignable to type 'StorybookConfig'.
  Object literal may only specify known properties, and 'env' does not exist in type 'StorybookConfig'.

How to test

Checklist

• 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.

["cleanup", "BREAKING CHANGE", "feature request", "bug", "documentation", "maintenance", "dependencies", "other"]

[IanVS]

Thanks @zigang93! It looks like I put it in the wrong spot in #21173. Would you mind also removing the type from BuilderOptions (where I had put it) now?

[zigang93]

Thanks @zigang93! It looks like I put it in the wrong spot in #21173. Would you mind also removing the type from BuilderOptions (where I had put it) now?

@IanVS Done

[IanVS]

LGTM, but I'm the one who got it wrong before so take that with a grain of salt. 🙈

[kasperpeulen]

Maybe @ndelangen can have another look?