git: openjdk/jdk: 8307297: Move some DnD tests to open

[Alisen Chung]

Changeset: 3bf38761
Author:    Alisen Chung <achung at openjdk.org>
Date:      2023-05-12 21:23:25 +0000
URL:       https://git.openjdk.org/jdk/commit/3bf3876185f7b9e7679af3fa22ec20887cd4e498

8307297: Move some DnD tests to open

Reviewed-by: prr, serb

+ test/jdk/java/awt/dnd/DragSourceSerializationTest.java
+ test/jdk/java/awt/dnd/DragTriggerEventTest.java
+ test/jdk/java/awt/dnd/DropActionChangeTest.java
+ test/jdk/java/awt/dnd/DropActionChangedTest.java
+ test/jdk/java/awt/dnd/DropPerformanceTest.java
+ test/jdk/java/awt/dnd/DropTargetAddNotifyNPETest.java
+ test/jdk/java/awt/dnd/DropTargetNullFlavorMapTest.java