[jdk25u] RFR: 8370318: AES-GCM vector intrinsic may read out of bounds (x86_64, AVX-512)

[Aleksey Shipilev]

Fixes recent regression in JDK 24+.

Additional testing:
 - [x] Linux x86_64 server fastdebug, `compiler/codegen/aes/` fails without the product fix, passes with it
 - [x] Linux x86_64 server fastdebug, `all`

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Commit messages:
 - Backport 7bb490c4bf7ae55547e4468da0795dac0a873d2b

Changes: https://git.openjdk.org/jdk25u/pull/347/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk25u&pr=347&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8370318
  Stats: 22 lines in 2 files changed: 21 ins; 1 del; 0 mod
  Patch: https://git.openjdk.org/jdk25u/pull/347.diff
  Fetch: git fetch https://git.openjdk.org/jdk25u.git pull/347/head:pull/347

PR: https://git.openjdk.org/jdk25u/pull/347