Accept rotation gate names in CommutationChecker filters

[peter941221]

CommutationChecker used to map parameterized rotation gates to their generators before it applied the optional gates filter. With a filter like {"rx"}, an RXGate pair was normalized to "x" first, so the filter rejected it before the commutation lookup.

This PR keeps the filter keyed to the public gate names and still keeps generator normalization for the commutation logic itself. A filter like {"rx"} now accepts RXGate pairs from #16407, while unrelated filters such as {"rz"} still return False.

The regression coverage checks:

• the exact RXGate reproducer from the issue with gates={"rx"}
• the rejected generator-name filter with gates={"x"}
• the accepted mixed filter with gates={"rx", "x"}
• the still-rejected unrelated filter with gates={"rz"}

Tests run:

• python -m unittest test.python.circuit.test_commutation_checker.TestCommutationChecker.test_parameterized_gates_when_gates_specified test.python.circuit.test_commutation_checker.TestCommutationChecker.test_parameterized_gates
• python -m unittest test.python.circuit.test_commutation_checker
• cargo fmt --all --check
• python -m ruff check test/python/circuit/test_commutation_checker.py

Fix #16407

AI/LLM disclosure

• I didn't use LLM tooling, or only used it privately.
• I used the following tool to help write this PR description:
  OpenAI GPT-5 Codex
• I used the following tool to generate or modify code:
  OpenAI GPT-5 Codex

[peter941221]

Pushed 095318c.

I moved the gates early return to the start of commute(), renamed the regression to test_parameterized_gates_when_gates_specified, and trimmed it to the rx cases the review asked for, plus the mixed and empty filters.

I rebuilt the Rust extension and reran:
python -m unittest test.python.circuit.test_commutation_checker.TestCommutationChecker.test_parameterized_gates_when_gates_specified test.python.circuit.test_commutation_checker.TestCommutationChecker.test_parameterized_gates
python -m unittest test.python.circuit.test_commutation_checker
cargo fmt --all --check
python -m ruff check test/python/circuit/test_commutation_checker.py

[alexanderivrii]

This is a copy-pasted message. At the moment, you have 9 open PRs, and it seems that most of them were created using an LLM with little to no human involvement in the process. Talking to LLMs is not a good use of reviewers' time. I strongly suggest keeping only 1 or 2 PRs that you are willing to invest your own time and effort in as a human, and closing the rest.

[peter941221]

I narrowed this PR to the named-filter behavior only and dropped the empty-set assertion. I closed the other open PRs, so this and #16388 are the two active ones.