RFR: 8358078: javap crashes with NPE on preview class file

[Hannes Greule]

This change addresses a NPE in javap when trying to print a class with minorVersion != 0. With this change, we fall back to the methods that don't take a `ClassFileFormatVersion` in such case.

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Commit messages:
 - fix
 - test

Changes: https://git.openjdk.org/jdk/pull/25569/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=25569&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8358078
  Stats: 107 lines in 2 files changed: 104 ins; 0 del; 3 mod
  Patch: https://git.openjdk.org/jdk/pull/25569.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/25569/head:pull/25569

PR: https://git.openjdk.org/jdk/pull/25569