Store node_env in TransformContext instead of SwcEcmaTransformPluginsTransformer
The SWC plugin transformer was storing node_env as a field on the struct,
which caused it to be locked in at plugin construction time from NextMode.
Instead, derive node_env from process.env.NODE_ENV compile-time defines in
EcmascriptModuleAsset::parse() and thread it through TransformContext so
each file transformation sees the correct environment value.
Co-Authored-By: Claude <noreply@anthropic.com>
next.js
ecf7126f - Store node_env in TransformContext instead of SwcEcmaTransformPluginsTransformer
