RFR: 8371187: [BigEndian Platforms] Vector lane reversal error

[Varada M]

This change fixes incorrect lane ordering in reinterpretation operations on big-endian platforms. When converting from wider to narrower lane types like Long to Int, Long to Short, big-endian systems produced reversed sub-lanes.
The patch adds a maybeSwapOnConverted() and a generic normalizeSubLanesForSpecies() shuffle builder to correct the sub-lane order based on element sizes on big-endian

JBS: [JDK-8371187](https://bugs.openjdk.org/browse/JDK-8371187)

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Commit messages:
 - fix for vector alignment issue on big-endian

Changes: https://git.openjdk.org/jdk/pull/28425/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=28425&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8371187
  Stats: 114 lines in 7 files changed: 113 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/28425.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/28425/head:pull/28425

PR: https://git.openjdk.org/jdk/pull/28425