[jdk24u] RFR: 8347039: ThreadPerTaskExecutor terminates if cancelled tasks still running

Wed Jan 15 13:14:53 UTC 2025

Hi all,

This pull request contains a backport of commit [af3f5d85](https://github.com/openjdk/jdk/commit/af3f5d852e5dd0191548bdc477546b5b343d1276) from the [openjdk/jdk](https://git.openjdk.org/jdk) repository.

The commit being backported was authored by Alan Bateman on 15 Jan 2025 and was reviewed by Viktor Klang.

Thanks!

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Commit messages:
 - Backport af3f5d852e5dd0191548bdc477546b5b343d1276

Changes: https://git.openjdk.org/jdk24u/pull/19/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk24u&pr=19&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8347039
  Stats: 66 lines in 2 files changed: 54 ins; 2 del; 10 mod
  Patch: https://git.openjdk.org/jdk24u/pull/19.diff
  Fetch: git fetch https://git.openjdk.org/jdk24u.git pull/19/head:pull/19

PR: https://git.openjdk.org/jdk24u/pull/19