[jdk17u-dev] RFR: 8299553: Make ScaledEtchedBorderTest.java comprehensive

[Goetz Lindenmaier]

I backport this for parity with 17.0.18-oracle.

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Commit messages:
 - Backport 558d610bebb6967b4cfe922f62f1c4ba0df7daaf

Changes: https://git.openjdk.org/jdk17u-dev/pull/4013/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=4013&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8299553
  Stats: 288 lines in 3 files changed: 145 ins; 54 del; 89 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/4013.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev.git pull/4013/head:pull/4013

PR: https://git.openjdk.org/jdk17u-dev/pull/4013