fix: npx shadcn@latest init --force --silent --yes --defaults fails to initialize project

[vomaksh]

Addresses #7071

The issue was

Validation failed:
- tailwind: Required

It was caused by baseColor = null when initializing project with --defaults which broke zod validation.

[vercel]

@vomaksh is attempting to deploy a commit to the shadcn-pro Team on Vercel.

A member of the Team first needs to authorize it.

[nrjdalal]

much needed if it works, did you ran all tests?

like running the cli, pnpm:format and pnpm:check?

[vomaksh]

Yes, I ran the cli locally. I ran the following commands to run the cli

• pnpm build --filter=shadcn
• cd packages/shadcn && npm link
• npx shadcn init --force --silent --yes --defaults

[vomaksh]

Ran the following commands as you specified

• pnpm format:write --filter=shadcn
• pnpm format:check --filter=shadcn
  These went fine. No errors.