<i18n dev> [jdk24] RFR: 8345818: Fix SM cleanup of parsing of System property resource.bundle.debug

[Roger Riggs]

Backport this trivial fix to parsing of the system property "resource.bundle.debug" to jdk24.

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Commit messages:
 - Backport 4f855d1342d55aeee93b7d0c5796fbfd4994c856

Changes: https://git.openjdk.org/jdk/pull/22664/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=22664&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8345818
  Stats: 2 lines in 1 file changed: 0 ins; 1 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/22664.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/22664/head:pull/22664

PR: https://git.openjdk.org/jdk/pull/22664