skyfocus: add `dump --skyframe={working_set,working_set_frontier_deps}`.

Failed in 1h 18m
:pipeline:
Print Test Summary for Shards
17/20
:mac: macOS (shard 16)curl -sS https://raw.githubusercontent.com/bazelbuild/continuous-integration/master/buildkite/bazelci.py?1720096175 -o bazelci.py && python3 bazelci.py runner --task=macos_v2 --http_config=https://raw.githubusercontent.com/fweikert/bazel/macos_v2/.bazelci/postsubmit.yml
Waited 9s
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Ran in 1h 16m
Total Job Run Time: 13h 27m