[jdk21u-dev] RFR: 8349188: LineBorder does not scale correctly

[Goetz Lindenmaier]

I backport this for parity with 21.0.10-oracle.

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Commit messages:
 - Backport 24117c6e9aa862bad839e93eff70810a75605ac5

Changes: https://git.openjdk.org/jdk21u-dev/pull/2295/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=2295&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8349188
  Stats: 95 lines in 3 files changed: 42 ins; 19 del; 34 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/2295.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/2295/head:pull/2295

PR: https://git.openjdk.org/jdk21u-dev/pull/2295