fix(android): add CMake task dependency to prevent race condition (#3165)

## Summary

- Add `afterEvaluate` block in `android/build.gradle` to ensure
`buildCMake*` tasks depend on `react-native-nitro-modules`'
corresponding CMake tasks
- Prevents intermittent linker error where `libNitroModules.so` is not
yet built when IAP's CMake runs

## Context

When building with Gradle parallel execution, IAP's
`buildCMakeDebug[arm64-v8a]` can run before `react-native-nitro-modules`
finishes producing `libNitroModules.so`, causing a linker failure. This
was a latent race condition that became more visible after the
nitro-modules 0.35.0 upgrade (JNI initialization pattern change).

Investigated upstream nitro 0.35.0 — no CMake/Gradle build order changes
were made, confirming this is a pre-existing issue.

Closes #3163

## Test plan

- [x] Android build succeeds with `--parallel` flag
- [x] No regression on iOS build (android-only change, no iOS impact)

🤖 Generated with [Claude Code](https://claude.ai/code)

---------

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

Author: hyochan

android/build.gradle

@@ -204,3 +204,20 @@ dependencies {
 configurations.all {
   exclude group: 'com.facebook.react', module: 'react-native-safe-area-context'
 }
+
+// Ensure our CMake tasks run after react-native-nitro-modules' CMake tasks
+// to prevent race condition where libNitroModules.so is not yet built.
+// See: https://github.com/hyochan/react-native-iap/issues/3163
+afterEvaluate {
+  def nitroProject = rootProject.findProject(':react-native-nitro-modules')
+  if (nitroProject) {
+    tasks.configureEach { task ->
+      if (task.name.startsWith('buildCMake')) {
+        def nitroTask = nitroProject.tasks.findByName(task.name)
+        if (nitroTask) {
+          task.dependsOn(nitroTask)
+        }
+      }
+    }
+  }
+}