RFR: 8344833: CTW: Make failing on zero classes optional

Fri Nov 22 11:16:25 UTC 2024

For CTW, zero classes in provided jar is now a failure.
This creates noisy and blocking false positives in fuzzy/mass scale runs, where we use jar archives from random sources, unchecked or randomly generated, etc.

This PR makes this behaviour controllable. Default reaction is a failure, like before.

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Commit messages:
 - 8344833: CTW: Make failing on zero classes optional

Changes: https://git.openjdk.org/jdk/pull/22320/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=22320&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8344833
  Stats: 8 lines in 1 file changed: 7 ins; 1 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/22320.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/22320/head:pull/22320

PR: https://git.openjdk.org/jdk/pull/22320