Update paths in a new setup to fix nightlies

Summary:
Changelog: [Internal]

- We should be copying `/packages/react-native/package.json`, not root `package.json`
- Updating CircleCI config's target directory where hermes artifacts should be copied

Differential Revision: D44214309

fbshipit-source-id: e354ac7c489b5d6a14e0ecb196cb9c801c27126f

.circleci/config.yml

@@ -1511,8 +1511,8 @@ jobs:
             cp -r $HERMES_WS_DIR/win64-bin/* ./packages/react-native/sdks/hermesc/win64-bin/.
             cp -r $HERMES_WS_DIR/linux64-bin/* ./packages/react-native/sdks/hermesc/linux64-bin/.
             mkdir -p ./ReactAndroid/external-artifacts/artifacts/
-            cp $HERMES_WS_DIR/hermes-runtime-darwin/hermes-ios-debug.tar.gz ./ReactAndroid/external-artifacts/artifacts/hermes-ios-debug.tar.gz
-            cp $HERMES_WS_DIR/hermes-runtime-darwin/hermes-ios-release.tar.gz ./ReactAndroid/external-artifacts/artifacts/hermes-ios-release.tar.gz
+            cp $HERMES_WS_DIR/hermes-runtime-darwin/hermes-ios-debug.tar.gz ./packages/react-native/ReactAndroid/external-artifacts/artifacts/hermes-ios-debug.tar.gz
+            cp $HERMES_WS_DIR/hermes-runtime-darwin/hermes-ios-release.tar.gz ./packages/react-native/ReactAndroid/external-artifacts/artifacts/hermes-ios-release.tar.gz
 
       - run_yarn
       - download_gradle_dependencies

scripts/set-rn-version.js

@@ -61,7 +61,10 @@ const tmpVersioningFolder = fs.mkdtempSync(
 echo(`The temp versioning folder is ${tmpVersioningFolder}`);
 
 saveFiles(
-  ['package.json', 'packages/react-native/template/package.json'],
+  [
+    'packages/react-native/package.json',
+    'packages/react-native/template/package.json',
+  ],
   tmpVersioningFolder,
 );