[jdk24] RFR: 8346737: GenShen: Generational memory pools should not report zero for maximum capacity

[William Kemper]

Clean backport. Fixes many SA tests.

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Commit messages:
 - Backport 249f141211c94afcce70d9d536d84e108e07b4e5

Changes: https://git.openjdk.org/jdk/pull/22984/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=22984&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8346737
  Stats: 6 lines in 2 files changed: 0 ins; 6 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/22984.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/22984/head:pull/22984

PR: https://git.openjdk.org/jdk/pull/22984