[jdk21u-dev] RFR: 8342576: [macos] AppContentTest still fails after JDK-8341443 for same reason on older macOS versions

[Goetz Lindenmaier]

I backport this for parity with 21.0.10-oracle.

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Depends on: https://git.openjdk.org/jdk21u-dev/pull/2442

Commit messages:
 - backport ceaa71e73100072b73e8bb8ec57259510e92f1c5

Changes: https://git.openjdk.org/jdk21u-dev/pull/2443/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=2443&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8342576
  Stats: 102 lines in 2 files changed: 73 ins; 12 del; 17 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/2443.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/2443/head:pull/2443

PR: https://git.openjdk.org/jdk21u-dev/pull/2443