[jdk26] RFR: 8374233: Overloaded constructor MountUnmountDisabler(jthread thread) is missed

[Serguei Spitsyn]

Please, review a jdk 26 backport. This pull request contains a clean backport of simple changeset https://github.com/openjdk/jdk/commit/f5249db9c566f87f7fc4f3ed70114a8168babd8b from the [openjdk/jdk](https://git.openjdk.org/jdk) repository.
This changeset was reviewed by [Chris Plummer](https://openjdk.org/census#cjplummer) and [Alex Menkov](https://openjdk.org/census#amenkov).

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Commit messages:
 - Backport f5249db9c566f87f7fc4f3ed70114a8168babd8b

Changes: https://git.openjdk.org/jdk/pull/28968/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=28968&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8374233
  Stats: 9 lines in 2 files changed: 9 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/28968.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/28968/head:pull/28968

PR: https://git.openjdk.org/jdk/pull/28968