RFR: 8327840: Automate javax/swing/border/Test4129681.java [v3]

[Tejesh R]

> Automated the Test `javax/swing/border/Test4129681.java` from manual as suggested in JBS description.
> Verified in CI system and its Green. The test has been verified for Metal L&F and the same is set explicitly..

Tejesh R has updated the pull request incrementally with one additional commit since the last revision:

  Review updates

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/18336/files
  - new: https://git.openjdk.org/jdk/pull/18336/files/cfb599ff..029be55c

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=18336&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=18336&range=01-02

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/18336.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/18336/head:pull/18336

PR: https://git.openjdk.org/jdk/pull/18336