Track transitive usage of aconfig flags and add LOCAL_ACONFIG_FILES to Android-<product>.mk

Bug: 283910439
Test: m nothing (runs soong tests)
Change-Id: I59f9bef7b7c502565d531a5685c002a177e0a77c
diff --git a/aconfig/Android.bp b/aconfig/Android.bp
index ae8276f..5e0620e 100644
--- a/aconfig/Android.bp
+++ b/aconfig/Android.bp
@@ -28,6 +28,7 @@
         "aconfig_declarations_test.go",
         "aconfig_values_test.go",
         "aconfig_value_set_test.go",
+        "java_aconfig_library_test.go",
     ],
     pluginFor: ["soong_build"],
 }