Gradle 8.x prep - specify task dependency between mergeNativeLibs and external native builds (#36253)

Summary:
Pull Request resolved: #36253

Another build warning that got converted into a failure in Gradle 8.x
Specifically here as we're running 4 native builds in parallel for RN Tester, but they all originate
from 2 CMake intermediates files (one set for Debug and one for Release), Gradle raises a warning.

Here I'm fixing this warning by specifying an explicit ordering between those tasks.

Changelog:
[Internal] [Changed] - Gradle 8.x prep - specify task dependency between mergeNativeLibs and external native builds

Reviewed By: cipolleschi

Differential Revision: D43501128

fbshipit-source-id: ebd5797b4c8cf7044515e9d9c59f8d146a3524e2

Author: cortinico

packages/rn-tester/android/app/build.gradle

@@ -206,4 +206,12 @@ afterEvaluate {
     // As we're consuming Hermes from source, we want to make sure
     // `hermesc` is built before we actually invoke the `emit*HermesResource` task
     createBundleHermesReleaseJsAndAssets.dependsOn(":ReactAndroid:hermes-engine:buildHermes")
+
+    // As we're building 4 native flavors in parallel, there is clash on the `.cxx/Debug` and
+    // `.cxx/Release` folder where the CMake intermediates are stored.
+    // We fixing this by instructing Gradle to always mergeLibs after they've been built.
+    mergeHermesDebugNativeLibs.mustRunAfter(externalNativeBuildJscDebug)
+    mergeHermesReleaseNativeLibs.mustRunAfter(externalNativeBuildJscRelease)
+    mergeJscDebugNativeLibs.mustRunAfter(externalNativeBuildHermesDebug)
+    mergeJscReleaseNativeLibs.mustRunAfter(externalNativeBuildHermesRelease)
 }