Fix stream-tracing with default methods

Test: Ran mma ART_TEST_TRACE=true ART_TEST_TRACE_STREAM=true -j40 test-art-host

Bug: 30102284
Bug: 30286605

Change-Id: I12f2534bc2d42a7504e6c1972c4cfdda2f77286f
diff --git a/runtime/mirror/class-inl.h b/runtime/mirror/class-inl.h
index b783a01..9a9fd87 100644
--- a/runtime/mirror/class-inl.h
+++ b/runtime/mirror/class-inl.h
@@ -457,6 +457,7 @@
   Class* declaring_class = method->GetDeclaringClass();
   DCHECK(declaring_class != nullptr) << PrettyClass(this);
   DCHECK(declaring_class->IsInterface()) << PrettyMethod(method);
+  DCHECK(!method->IsCopied());
   // TODO cache to improve lookup speed
   const int32_t iftable_count = GetIfTableCount();
   IfTable* iftable = GetIfTable();