RFR: 8339793: Fix incorrect APX feature enabling with -XX:-UseAPX

[Jatin Bhateja]

Currently VM_Supports::supports_apx_f() returns a true value even if user explicitly pass -XX:-UseAPX runtime flag, this enables APX specific code and register set.

This bug fix patch turn off the APX_F feature if UseAPX runtime flag is explicitly set to false value.

Best Regards,
Jatin

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Commit messages:
 - 8339793: Fix incorrect APX feature enabling with -XX:-UseAPX.

Changes: https://git.openjdk.org/jdk/pull/20921/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=20921&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8339793
  Stats: 4 lines in 1 file changed: 4 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/20921.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/20921/head:pull/20921

PR: https://git.openjdk.org/jdk/pull/20921