fix(android): pin hermes-compiler to V0 to match the Hermes V0 engine

[Andries-Smit]

Problem

An Android Developer App (dev flavor) built from the template shows a red screen after tapping LAUNCH:

Related to support ticket https://support.mendix.com/hc/en-us/requests/289784

[runtime not ready]: Error: Non-js exception: Compiling JS failed: Wrong bytecode version. Expected 96 but got 98, sourceURL: index.android.bundle

Seen with Mendix 11.12.6 and template 19.1.7. The same hermes-compiler resolution is on master.

Root cause

The Hermes engine and the Hermes compiler come from different places:

Part	Source	Version today
Engine (libhermesvm.so)	Maven com.facebook.hermes:hermes-android	0.15.1 (bytecode 96), forced in android/app/build.gradle
Compiler (hermesc)	npm node_modules/hermes-compiler	250829098.0.9 (Hermes V1, bytecode 98), a dependency of react-native@0.84.1

#1303 (MOO-2419) forced the engine to V0. The compiler doesn't go through Gradle dependency resolution, so that force doesn't reach it. detectOSAwareHermesCommand() in @react-native/gradle-plugin uses node_modules/hermes-compiler/hermesc/<os>/hermesc unless react.hermesCommand is set, and it ignores hermesV1Enabled.

Only variants that are not in debuggableVariants (the dev* flavor) let Gradle compile the JS bundle with hermesc. That's why only the Developer App is affected. appstore* builds ship the Studio Pro bundle, which is already bytecode 96.

Fix

Pin hermes-compiler to 0.15.1, the same Hermes release as the forced engine:

• In overrides/resolutions, so react-native's dependency resolves to it.
• As a direct devDependency, so npm hoists it to node_modules/hermes-compiler. Without this, npm nests it under react-native/node_modules, and the Gradle plugin doesn't look there.

iOS isn't affected: react-native-xcode.sh uses hermesc from the hermes-engine pod.

If Hermes V1 is enabled later, remove this pin together with the hermes-android force.

Verification (in a project generated from the template)

• node_modules/hermes-compiler/hermesc/win64-bin/hermesc.exe -version reports HBC bytecode version: 96. Before the pin it was 98.
• Clean assembleDevDebug: assets/index.android.bundle in the APK has a bytecode 96 header.
• On an Android 16 x86_64 emulator, LAUNCH loads the Mendix app with no bytecode error.