RFR: 8354561: Open source several swing tests batch0

[Alexander Zvegintsev]

Few more tests open sourced:

javax/swing/JTextArea/4474400/bug4474400.java
javax/swing/border/TitledBorder/TransparentTitleTest.java
javax/swing/JComboBox/4139900/bug4139900.java
javax/swing/JComboBox/4174876/bug4174876.java

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Commit messages:
 - 8354561: Open source several swing tests batch0

Changes: https://git.openjdk.org/jdk/pull/24680/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=24680&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8354561
  Stats: 397 lines in 4 files changed: 397 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/24680.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/24680/head:pull/24680

PR: https://git.openjdk.org/jdk/pull/24680