Propagate aconfig providers for more modules.

Bug: 308625757
Test: manual
Change-Id: Iaf6d45a4259f1c6c34476c34c431344283ae2830
diff --git a/java/aar.go b/java/aar.go
index 15a542e..7fc39b6 100644
--- a/java/aar.go
+++ b/java/aar.go
@@ -980,6 +980,9 @@
 
 	sdkVersion    android.SdkSpec
 	minSdkVersion android.ApiLevel
+
+	// Single aconfig "cache file" merged from this module and all dependencies.
+	mergedAconfigFiles map[string]android.Paths
 }
 
 var _ android.OutputFileProducer = (*AARImport)(nil)
@@ -1274,6 +1277,7 @@
 	android.SetProvider(ctx, JniPackageProvider, JniPackageInfo{
 		JniPackages: a.jniPackages,
 	})
+	android.CollectDependencyAconfigFiles(ctx, &a.mergedAconfigFiles)
 }
 
 func (a *AARImport) HeaderJars() android.Paths {