git: openjdk/jdk11u-dev: 8282789: Create a regression test for the JTree usecase of JDK-4618767

[Goetz Lindenmaier]

Changeset: 672e3c23
Author:    Goetz Lindenmaier <goetz at openjdk.org>
Date:      2022-08-01 08:51:47 +0000
URL:       https://git.openjdk.org/jdk11u-dev/commit/672e3c23643eada99b0c2d90fc8c8831b3d9791e

8282789: Create a regression test for the JTree usecase of JDK-4618767

Backport-of: 83a1c90433343107eaa2a7fa41b9b07f86b6ce19

+ test/jdk/javax/swing/JTree/4618767/JTreeSelectedElementTest.java