[lworld] Integrated: 8357410: [lworld] Disable UseAtomicValueFlattening in ObjectMethods until JDK-8357373 is fixed

[Tobias Hartmann]

Setting `-XX:-UseAtomicValueFlattening` until [JDK-8357373](https://bugs.openjdk.org/browse/JDK-8357373) is fixed.

Thanks,
Tobias

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Commit messages:
 - 8357410: [lworld] Disable UseAtomicValueFlattening in ObjectMethods until JDK-8357373 is fixed

Changes: https://git.openjdk.org/valhalla/pull/1466/files
  Webrev: https://webrevs.openjdk.org/?repo=valhalla&pr=1466&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8357410
  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/valhalla/pull/1466.diff
  Fetch: git fetch https://git.openjdk.org/valhalla.git pull/1466/head:pull/1466

PR: https://git.openjdk.org/valhalla/pull/1466