next.js

ec11c862 - docs: fix CSP example to only include unsafe-eval in development (#88407)

docs: fix CSP example to only include unsafe-eval in development (#88407) ## What Fixes the CSP documentation "Without Nonces" example to only include `'unsafe-eval'` in development mode. ## Why The example was showing `'unsafe-eval'` without a development check, which would cause it to be shipped to production. This is inconsistent with the guidance in the "Development vs Production Considerations" section which correctly shows how to conditionally add `'unsafe-eval'` only in development. ## How Added a `isDev` check using `process.env.NODE_ENV === 'development'` and conditionally includes `'unsafe-eval'` in the `script-src` directive only when in development mode.