next.js

cdb9a8c3 - switch development origin verification to be opt-in rather than opt-out (#77395)

switch development origin verification to be opt-in rather than opt-out (#77395) To avoid breaking local development proxies and more complex setups, this ensures that we only block cross-origin development requests when opting into the configuration. In a future major release, this will not be opt-in, and will require explicitly providing the allowed origins that can access the special `/_next` endpoints. This adds a warning when a cross origin request is detected that would be blocked without explicit configuration. Fixes #77073 Fixes #77253 Fixes #77344