[jdk21u-dev] RFR: 8372348: Adjust some UL / JFR string deduplication output messages

[Matthias Baesken]

8372348: Adjust some UL / JFR string deduplication output messages

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Commit messages:
 - Backport 4044c37d40cec86a80b1c07a95c2e05900b34df2

Changes: https://git.openjdk.org/jdk21u-dev/pull/2585/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=2585&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8372348
  Stats: 13 lines in 1 file changed: 4 ins; 0 del; 9 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/2585.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/2585/head:pull/2585

PR: https://git.openjdk.org/jdk21u-dev/pull/2585