Unbreak react-native CI (#52997)

Summary:
Pull Request resolved: #52997

Quick followup of D79481936

Changelog: [Internal]

Reviewed By: marcoww6

Differential Revision: D79495826

fbshipit-source-id: e133cf31800455eb4f4968d6995525fa8a843a77

Author: SamChou19815

packages/react-native/scripts/ios-prebuild/hermes.js

@@ -134,7 +134,7 @@ const HermesEngineSourceTypes /*:{
   LOCAL_PREBUILT_TARBALL: 'local_prebuilt_tarball',
   DOWNLOAD_PREBUILD_TARBALL: 'download_prebuild_tarball',
   DOWNLOAD_PREBUILT_NIGHTLY_TARBALL: 'download_prebuilt_nightly_tarball',
-} as const;
+};
 
 /**
  * Checks if the Hermes artifacts are already downloaded and up to date with the specified version.