Allow android.os.flags to be used by ART.

Bug: 377557749
Change-Id: I528af61ea0f381a8e96991ccae43e0986fd8975f
Test: m
diff --git a/AconfigFlags.bp b/AconfigFlags.bp
index 960bb5c..e34bbcf 100644
--- a/AconfigFlags.bp
+++ b/AconfigFlags.bp
@@ -376,6 +376,8 @@
     min_sdk_version: "30",
     apex_available: [
         "//apex_available:platform",
+        "com.android.art",
+        "com.android.art.debug",
         "com.android.btservices",
         "com.android.mediaprovider",
         "com.android.permission",