RFR: 8356266: Fix non-Shenandoah build after JDK-8356075

[Roman Kennke]

[JDK-8356075](https://bugs.openjdk.org/browse/JDK-8356075) (see PR #25001) causes builds without Shenandoah GC to fail. It's missing an `#if INCLUDE_SHENANDOAHGC`.

Testing:
 - [x] Build without Shenandoah GC

-------------

Commit messages:
 - 8356266: Fix non-Shenandoah build after JDK-8356075

Changes: https://git.openjdk.org/jdk/pull/25064/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=25064&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8356266
  Stats: 2 lines in 1 file changed: 2 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/25064.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/25064/head:pull/25064

PR: https://git.openjdk.org/jdk/pull/25064