Use Hermes V1 as default engine (#54989)

Summary:
This change makes Hermes V1 the default engine for React Native for both platforms. This change needs to land before the branch cut of react native 0.84

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## Changelog:
[iOS][Changed] - Make Hermes V1 the default engine for iOS

Pull Request resolved: https://github.com/facebook/react-native/pull/54989

Test Plan:
1. Run `bundle exec pod install` and verified that Hermes V1 is used when building from source
<img height="480" alt="Simulator Screenshot - iPhone 17 Pro - 2025-12-29 at 11 28 44" src="https://github.com/user-attachments/assets/0889f16c-f2ee-4a0e-9a4d-529dd82c8283" />
2. Run `prebuild-ios -s` and verified that the scripts downloads the Hermes V1 tarball
<img width="831" height="324" alt="Screenshot 2025-12-29 at 10 37 53" src="https://github.com/user-attachments/assets/9a60565e-1e13-4967-a4a4-dd079e6b040f" />
3. GHA and nightlies

Reviewed By: vzaidman, cortinico, huntie

Differential Revision: D89881943

Pulled By: cipolleschi

fbshipit-source-id: 958b6d31bd4230ba4a5c7fee2bffc19e03dcbc89

scripts/releases/utils/hermes-utils.js

@@ -27,6 +27,7 @@ const MAVEN_VERSIONS_FILE_PATH = path.join(
 
 async function getLatestHermesNightlyVersion() /*: Promise<{
   compilerVersion: string,
+  compilerV1Version: string,
   runtimeVersion: string,
   runtimeV1Version: string,
 }> */ {
@@ -43,6 +44,7 @@ async function getLatestHermesNightlyVersion() /*: Promise<{
 
   return {
     compilerVersion,
+    compilerV1Version,
     // runtime version should match the compiler version
     runtimeVersion: compilerVersion,
     runtimeV1Version: compilerV1Version,
@@ -84,7 +86,7 @@ async function updateHermesRuntimeDependenciesVersions(
 async function updateHermesVersionsToNightly() {
   const hermesVersions = await getLatestHermesNightlyVersion();
   await updateHermesCompilerVersionInDependencies(
-    hermesVersions.compilerVersion,
+    hermesVersions.compilerV1Version,
   );
   await updateHermesRuntimeDependenciesVersions(
     hermesVersions.runtimeVersion,