Allow running storybook build with development

[custardcream98]

Is your feature request related to a problem? Please describe.

Currently, when running storybook build, the process automatically sets NODE_ENV to production.
This is problematic for scenarios where I want to use the development environment.

To use the development environment with Storybook and Vite, I have to manually prepend NODE_ENV=development to the command, like this:

NODE_ENV=development storybook build

Describe the solution you'd like

• Add a way to specify the environment (e.g., --env development) when running storybook build.
• Ensure that Storybook respects this flag for both Vite and other supported bundlers.
• Or, it would be helpful to mention this workaround (NODE_ENV=development storybook build) in the documentation.

Describe alternatives you've considered

No response

Are you able to assist to bring the feature to reality?

yes, I can

Additional context

No response