[BugFix] Add MultiCategorical support in PettingZoo action masks

[matteobettini]

fixes #2472
may benefit from fixing #2486 for full functionality

[pytorch-bot]

🔗 Helpful Links

🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/rl/2485

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❌ 5 New Failures, 8 Unrelated Failures

As of commit ffe9827 with merge base 56cc525 ():

NEW FAILURES - The following jobs have failed:

• Continuous Benchmark (PR) / CPU Pytest benchmark (gh)
  /home/runner/work/_temp/de58dab2-2ad9-4ccb-a6bb-90ce7b0b95cc.sh: line 5: 2138 Bus error (core dumped) $RUN_BENCHMARK /tmp/tmp.ibHPBjwhl5
• Continuous Benchmark (PR) / GPU Pytest benchmark (gh)
  /__w/_temp/b742aab5-3352-406f-9df8-24330babfef3.sh: line 5: 10150 Bus error (core dumped) $RUN_BENCHMARK /tmp/tmp.byqNNkHKQv
• Continuous Benchmark / CPU Pytest benchmark (gh)
  /home/runner/work/_temp/80937298-e7ca-4578-b6c9-50e0dde099af.sh: line 3: 2103 Bus error (core dumped) python -m pytest --benchmark-json output.json
• Continuous Benchmark / GPU Pytest benchmark (gh)
  Fatal Python error: Fatal Python error: Fatal Python error: Fatal Python error: Bus errorBus errorBus error
• Habitat Tests on Linux / tests (3.9, 12.1) / linux-job (gh)
  RuntimeError: Command docker exec -t d576bd2d1f6de916b83af629c9eb272baf5fdfcbc819ca5f488973827ccfee01 /exec failed with exit code 134

BROKEN TRUNK - The following jobs failed but were present on the merge base:

👉 Rebase onto the `viable/strict` branch to avoid these failures

• Build Windows Wheels / pytorch/rl / upload / wheel-py3_9-cpu (gh) (trunk failure)
  ##[error]Unable to find any artifacts for the associated workflow
• Build Windows Wheels / pytorch/rl / upload / wheel-py3_9-cuda11_8 (gh) (trunk failure)
  ##[error]Unable to find any artifacts for the associated workflow
• Build Windows Wheels / pytorch/rl / upload / wheel-py3_9-cuda12_1 (gh) (trunk failure)
  ##[error]Unable to find any artifacts for the associated workflow
• Build Windows Wheels / pytorch/rl / upload / wheel-py3_9-cuda12_4 (gh) (trunk failure)
  ##[error]Unable to find any artifacts for the associated workflow
• Libs Tests on Linux / unittests-jumanji (3.9, 12.1) / linux-job (gh) (trunk failure)
  test/test_libs.py::TestJumanji::test_jumanji_rendering[batch_size1-RubiksCube-v0]
• Libs Tests on Linux / unittests-robohive (3.9, 12.1) / linux-job (gh) (trunk failure)
  test/test_libs.py::TestRoboHive::test_robohive[franka_slide_random-v3-True-True]
• Unit-tests on Linux / tests-olddeps (3.8, 11.6) / linux-job (gh) (trunk failure)
  test/test_modules.py::TestMultiAgent::test_multiagent_mlp_tdparams[True-batch0-6-True-True-3]
• Unit-tests on Windows / unittests-cpu / windows-job (gh) (trunk failure)
  test/test_collector.py::TestCompile::test_compiled_policy[device0-compile_policy2-MultiSyncDataCollector]

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[vmoens]

LGTM