[lworld] RFR: 8326401: [lworld] compiler/valhalla/inlinetypes/TestLWorld.java fails after merge of jdk-22+25

[Christian Hagedorn]

The uncommented IR rule no longer fails with latest `lworld`. I'm therefore simply proposing to re-enable the IR rule again.

Tested `TestLWorld.java` with tier1-4 flag settings.

Thanks,
Christian

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Commit messages:
 - 8326401: [lworld] compiler/valhalla/inlinetypes/TestLWorld.java fails after merge of jdk-22+25

Changes: https://git.openjdk.org/valhalla/pull/1087/files
  Webrev: https://webrevs.openjdk.org/?repo=valhalla&pr=1087&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8326401
  Stats: 3 lines in 1 file changed: 0 ins; 1 del; 2 mod
  Patch: https://git.openjdk.org/valhalla/pull/1087.diff
  Fetch: git fetch https://git.openjdk.org/valhalla.git pull/1087/head:pull/1087

PR: https://git.openjdk.org/valhalla/pull/1087