HHH-9330 : orphanRemoval=true does not work in bidirectional relationships (without cascading)

(cherry picked from commit ef3550e)

Author: gbadner

hibernate-core/src/main/java/org/hibernate/engine/spi/CascadeStyles.java

@@ -205,7 +205,9 @@ public String toString() {
 	public static final CascadeStyle DELETE_ORPHAN = new BaseCascadeStyle() {
 		@Override
 		public boolean doCascade(CascadingAction action) {
-			return action == CascadingActions.DELETE || action == CascadingActions.SAVE_UPDATE;
+			return action == CascadingActions.DELETE ||
+					action == CascadingActions.SAVE_UPDATE ||
+					action == CascadingActions.PERSIST_ON_FLUSH;
 		}
 
 		@Override