Rename use-hermes-nightly.js to use-hermes-prebuilt.js (#56750)

Summary:
Pull Request resolved: #56750

Rename scripts/releases/use-hermes-nightly.js to scripts/releases/use-hermes-prebuilt.js.
The script fetches the latest prebuilt Hermes from the 'latest-v1' npm dist-tag, not a
true 'nightly' build. Update:
- Script name: use-hermes-nightly.js -> use-hermes-prebuilt.js
- Internal log message: 'nightly update' -> 'prebuilt update'
- Import: updateHermesVersionsToNightly -> updateHermesVersionsToPrebuilt
- CI step names: 'Set nightly Hermes versions' -> 'Set Hermes prebuilt version'
- Script path references in test-all.yml, test-ios-helloworld/action.yml,
  test-ios-rntester/action.yml

Differential Revision: D104649633

Author: cipolleschi

.github/actions/test-ios-helloworld/action.yml

@@ -23,10 +23,10 @@ runs:
       uses: ruby/setup-ruby@v1
       with:
         ruby-version: ${{ inputs.ruby-version }}
-    - name: Set nightly Hermes versions
+    - name: Set Hermes prebuilt version
       shell: bash
       run: |
-        node ./scripts/releases/use-hermes-nightly.js
+        node ./scripts/releases/use-hermes-prebuilt.js
     - name: Run yarn install again, with the correct hermes version
       uses: ./.github/actions/yarn-install
     - name: Download ReactNativeDependencies

.github/actions/test-ios-rntester/action.yml

@@ -32,10 +32,10 @@ runs:
       uses: ruby/setup-ruby@v1
       with:
         ruby-version: ${{ inputs.ruby-version }}
-    - name: Set nightly Hermes versions
+    - name: Set Hermes prebuilt version
       shell: bash
       run: |
-        node ./scripts/releases/use-hermes-nightly.js
+        node ./scripts/releases/use-hermes-prebuilt.js
     - name: Run yarn install again, with the correct hermes version
       uses: ./.github/actions/yarn-install
     - name: Prepare IOS Tests

.github/workflows/test-all.yml

@@ -368,10 +368,10 @@ jobs:
           cache-encryption-key: ${{ secrets.GRADLE_CACHE_ENCRYPTION_KEY }}
       - name: Run yarn install
         uses: ./.github/actions/yarn-install
-      - name: Set nightly Hermes versions
+      - name: Set Hermes prebuilt version
         shell: bash
         run: |
-          node ./scripts/releases/use-hermes-nightly.js
+          node ./scripts/releases/use-hermes-prebuilt.js
       - name: Run yarn install again, with the correct hermes version
         uses: ./.github/actions/yarn-install
       - name: Prepare the Helloworld application

scripts/releases/use-hermes-prebuilt.js

@@ -0,0 +1,32 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @flow strict-local
+ * @format
+ */
+
+'use strict';
+
+const {getReactNativePackage} = require('../shared/monorepoUtils');
+const {updateHermesVersionsToPrebuilt} = require('./utils/hermes-utils');
+
+async function main() {
+  const {packageJson} = await getReactNativePackage();
+  const hermesCompilerVersion = packageJson.dependencies?.['hermes-compiler'];
+
+  if (hermesCompilerVersion != null && hermesCompilerVersion !== '0.0.0') {
+    console.log(
+      `Skipping hermes prebuilt update: hermes-compiler is pinned to ${hermesCompilerVersion}`,
+    );
+    return;
+  }
+
+  await updateHermesVersionsToPrebuilt();
+}
+
+if (require.main === module) {
+  void main();
+}