RFR: 7904029: jcstress: Explicitly enable annotation processors to fix build artifacts on JDK 23+ [v3]

[Pavel Rappo]

> In addition to fixing the annotation processing, I also fixed a few "dangling doc comment" warnings I missed earlier in #162. These comments cause build failure on their own.

Pavel Rappo has refreshed the contents of this pull request, and previous commits have been removed. The incremental views will show differences compared to the previous content of the PR. The pull request contains one new commit since the last revision:

  Initial commit

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Changes:
  - all: https://git.openjdk.org/jcstress/pull/164/files
  - new: https://git.openjdk.org/jcstress/pull/164/files/bffdb87b..2385cbd3

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jcstress&pr=164&range=02
 - incr: https://webrevs.openjdk.org/?repo=jcstress&pr=164&range=01-02

  Stats: 10 lines in 2 files changed: 10 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jcstress/pull/164.diff
  Fetch: git fetch https://git.openjdk.org/jcstress.git pull/164/head:pull/164

PR: https://git.openjdk.org/jcstress/pull/164