[jdk17u-dev] RFR: 8349351: Combine Screen Inset Tests into a Single File

[Goetz Lindenmaier]

I backport this for parity with 17.0.19-oracle

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Commit messages:
 - Backport 9ea81d90175c11460d0efa83f82ceccc4ee2cd3b

Changes: https://git.openjdk.org/jdk17u-dev/pull/4222/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=4222&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8349351
  Stats: 209 lines in 2 files changed: 16 ins; 143 del; 50 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/4222.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev.git pull/4222/head:pull/4222

PR: https://git.openjdk.org/jdk17u-dev/pull/4222