[jdk21u] RFR: 8320053: GHA: Cross-compile gtest code

[Aleksey Shipilev]

Clean backport to improve GHA coverage.

Additional testing:
 - [ ] GHA

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Commit messages:
 - Backport 77a69661145a43ab564832b0354ec32068236214

Changes: https://git.openjdk.org/jdk21u/pull/368/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk21u&pr=368&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8320053
  Stats: 5 lines in 1 file changed: 5 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk21u/pull/368.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u.git pull/368/head:pull/368

PR: https://git.openjdk.org/jdk21u/pull/368