[jdk21u-dev] RFR: 8326948: Force English locale for timeout formatting

[Goetz Lindenmaier]

I backport this for parity with 21.0.4-oracle.

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Commit messages:
 - Backport e772e7817981b7b5c01b95245cf2022372494619

Changes: https://git.openjdk.org/jdk21u-dev/pull/390/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=390&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8326948
  Stats: 3 lines in 1 file changed: 2 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/390.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/390/head:pull/390

PR: https://git.openjdk.org/jdk21u-dev/pull/390