RFR: 8345126: [BACKOUT] JDK-8318127: align_up has potential overflow

[Casper Norrbin]

Caused failures in testing. Backing out to fix without blocking tests. Clean `git revert`

The failing 2 tests now pass again.

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Commit messages:
 - Revert "8318127: align_up has potential overflow"

Changes: https://git.openjdk.org/jdk/pull/22419/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=22419&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8345126
  Stats: 38 lines in 3 files changed: 0 ins; 33 del; 5 mod
  Patch: https://git.openjdk.org/jdk/pull/22419.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/22419/head:pull/22419

PR: https://git.openjdk.org/jdk/pull/22419