[jdk25u] RFR: 8349188: LineBorder does not scale correctly

[Alexey Ivanov]

This pull request contains a backport of commit [24117c6e](https://github.com/openjdk/jdk/commit/24117c6e9aa862bad839e93eff70810a75605ac5) from the [openjdk/jdk](https://git.openjdk.org/jdk) repository.

The commit being backported was authored by Rajat Mahajan on 3 Jul 2025 and was reviewed by Alexey Ivanov and Sergey Bylokhov.

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Commit messages:
 - Backport 24117c6e9aa862bad839e93eff70810a75605ac5

Changes: https://git.openjdk.org/jdk25u/pull/134/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk25u&pr=134&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/jdk25u/pull/134.diff
  Fetch: git fetch https://git.openjdk.org/jdk25u.git pull/134/head:pull/134

PR: https://git.openjdk.org/jdk25u/pull/134