[jdk21u-dev] RFR: 8336942: Improve test coverage for class loading elements with annotations of different retentions [v2]

[Liam Miller-Cushon]

> This change improves annotation processing test coverage, see [JDK-8336942](https://bugs.openjdk.org/browse/JDK-8336942). I resolved a trivial merge conflict with JDK-8323684, which added the `nameToAnnotation` map. The modified test passes.

Liam Miller-Cushon has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains two additional commits since the last revision:

 - Merge remote-tracking branch 'origin/master' into backport-JDK-8336942
 - 8336942: Improve test coverage for class loading elements with annotations of different retentions
   
   Reviewed-by: vromero

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Changes:
  - all: https://git.openjdk.org/jdk21u-dev/pull/1037/files
  - new: https://git.openjdk.org/jdk21u-dev/pull/1037/files/d059d1b6..3729338f

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=1037&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=1037&range=00-01

  Stats: 18349 lines in 211 files changed: 15995 ins; 1318 del; 1036 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/1037.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/1037/head:pull/1037

PR: https://git.openjdk.org/jdk21u-dev/pull/1037