git: openjdk/jdk21u-dev: master: 8353748: Open source several swing tests batch6

[Satyen Subramaniam]

Changeset: 36910541
Branch: master
Author:    Satyen Subramaniam <ssubramaniam at openjdk.org>
Date:      2025-08-25 16:24:45 +0000
URL:       https://git.openjdk.org/jdk21u-dev/commit/369105417379e1a0012cb9821e27bc6849ccc738

8353748: Open source several swing tests batch6

Backport-of: 38f9b3a9738de7896d840fc114a76ced3b77c269

+ test/jdk/javax/swing/JTree/NodeChangedTest.java
+ test/jdk/javax/swing/JTree/bug4118860.java
+ test/jdk/javax/swing/JTree/bug4169215.java
+ test/jdk/javax/swing/JTree/bug4196987.java
+ test/jdk/javax/swing/JTree/bug4270654.java
+ test/jdk/javax/swing/JTree/bug4618767.java