Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/48178
Changelog: [internal]
Adds a new mode for Fantom to run tests with dev-mode bytecode. Right now the modes were only dev (development with source code) or opt (optimized bytecode).
Reviewed By: rshest
Differential Revision: D66888986
fbshipit-source-id: 34b2566a65d138790e16f8fb5787fd9c2bcde536