[jdk17u-dev] RFR: 8328262: Convert javax/swing/JSplitPane/8132123/bug8132123.java applet test to main

[Goetz Lindenmaier]

I backport this for parity with 17.0.17-oracle.

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Commit messages:
 - Backport c01095c0c9d4de1995d079be3356468196d9a25e

Changes: https://git.openjdk.org/jdk17u-dev/pull/3802/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=3802&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8328262
  Stats: 166 lines in 3 files changed: 77 ins; 89 del; 0 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/3802.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev.git pull/3802/head:pull/3802

PR: https://git.openjdk.org/jdk17u-dev/pull/3802