Play Framework

ci: silence remaining CodeQL and macOS-build annotations

- codeql.yml: switch java-kotlin to build-mode: none. The "manual"
  mode prevented overlay-base database caching ("Cannot build an
  overlay-base database" warning). build-mode: none works here
  because framework/lib/*.jar is committed, so CodeQL resolves types
  from those directly — no ant build needed. Drops the JDK setup and
  ant jar steps; matrix collapses back to a flat list.
- build-test.yml: drop actions/setup-python from the build and
  build-on-mac jobs. Both run pure ant targets (artifact / build)
  that don't shell out to Python. setup-python on macOS was the
  source of the red "##[error]WARNING: Cache entry deserialization
  failed" annotation — pip recovering from a corrupt HTTP cache
  during the implicit pip self-upgrade. Removing the step removes
  the noise. The testing job keeps setup-python because ant test
  invokes play auto-test (Python).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>