Add PhantomReference_isEnqueued_A01 as flaky on Java

This will occasionally OOM

Change-Id: Ie606aeb1711c0cf95a699854a66a227260a1821f

src/test/java/com/android/tools/r8/JctfTestSpecifications.java

diff --git a/src/test/java/com/android/tools/r8/JctfTestSpecifications.java b/src/test/java/com/android/tools/r8/JctfTestSpecifications.java
index 2284ada..2974e15 100644
--- a/src/test/java/com/android/tools/r8/JctfTestSpecifications.java
+++ b/src/test/java/com/android/tools/r8/JctfTestSpecifications.java
@@ -1789,7 +1789,8 @@
               match(
                   and(
                       runtimes(Runtime.ART_V9_0_0, Runtime.ART_V8_1_0),
-                      artRuntimesUpTo(Runtime.ART_V4_4_4))))
+                      artRuntimesUpTo(Runtime.ART_V4_4_4),
+                      JAVA_RUNTIME)))
           .put("lang.ref.WeakReference.isEnqueued.WeakReference_isEnqueued_A01", anyDexVm())
           .put(
               "lang.ref.WeakReference.enqueue.WeakReference_enqueue_A01",