[jdk21u-dev] RFR: 8303920: Avoid calling out to python in DataDescriptorSignatureMissing test

[Daniel Hu]

Backport of improvements to DataDescriptorSignatureMissing test. Unclean for 2 minor reasons: updated copyright year and this [trivial issue fix in 22](https://github.com/openjdk/jdk/commit/34653c1e73452c0e07beb1f5e2eb8029fdb3befc) that adds a bug-id for `@ignore`. Otherwise, it's a clean backport.

Passes tier1 tests and the test itself on Linux x64

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Commit messages:
 - Backport 07eaea8c25bae6ed852685f082f8b50c5b20c1a9

Changes: https://git.openjdk.org/jdk21u-dev/pull/913/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=913&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8303920
  Stats: 158 lines in 1 file changed: 52 ins; 38 del; 68 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/913.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/913/head:pull/913

PR: https://git.openjdk.org/jdk21u-dev/pull/913