Enable java backend for UpdateEngineStable am: 6c2a6cc7fc am: aef7de4922

Original change: https://android-review.googlesource.com/c/platform/system/update_engine/+/2889337

Change-Id: I363f952d8c8895e3dd440e7d08de49aaf128fd15
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>
diff --git a/stable/Android.bp b/stable/Android.bp
index 73a9c37..54ae35d 100644
--- a/stable/Android.bp
+++ b/stable/Android.bp
@@ -40,7 +40,7 @@
             enabled: true,
         },
         java: {
-            enabled: false,
+            enabled: true,
         },
         ndk: {
             enabled: true,