RFR: 8373789: No PCH release build failure after JDK-8372543

[Aleksey Shipilev]

Simple missing include. Seems to uniquely affect release builds only, which explains why GHA have not caught it in the PR that regressed it: GHA runs no-PCH builds only for fastdebug.

Additional testing:
 - [x] Ad-hoc builds now pass

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

Commit messages:
 - Fix

Changes: https://git.openjdk.org/jdk/pull/28843/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=28843&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8373789
  Stats: 1 line in 1 file changed: 1 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/28843.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/28843/head:pull/28843

PR: https://git.openjdk.org/jdk/pull/28843