RFR: 8354561: Open source several swing tests batch0 [v2]

[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

Alexander Zvegintsev has updated the pull request incrementally with one additional commit since the last revision:

  review comments

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Changes:
  - all: https://git.openjdk.org/jdk/pull/24680/files
  - new: https://git.openjdk.org/jdk/pull/24680/files/08a7e843..08a5a85a

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=24680&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=24680&range=00-01

  Stats: 5 lines in 4 files changed: 1 ins; 1 del; 3 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