Fix the parameter expression case for RZZ validation

[t-imamichi]

Summary

The current RZZ validation fails with parameter expression as follows.

from qiskit import QuantumCircuit
from qiskit.circuit import Parameter
from qiskit_ibm_runtime import QiskitRuntimeService, SamplerV2

x = Parameter("x")
qc = QuantumCircuit(2, 2)
qc.rzz(2 * x, 0, 1)
qc.measure([0, 1], [0, 1])

service = QiskitRuntimeService(instance="...")
backend = service.backend("ibm_torino", use_fractional_gates=True)

sampler = SamplerV2(backend)
_ = sampler.run([(qc, 0.1)])

0.33.1

Traceback (most recent call last):
  File "/Users/ima/tasks/4_2024/qiskit/runtime/tmp/frac.py", line 14, in <module>
    _ = sampler.run([(qc, 0.1)])
        ^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/ima/envs/qiskit/lib/python3.12/site-packages/qiskit_ibm_runtime/sampler.py", line 120, in run
    return self._run(coerced_pubs)  # type: ignore[arg-type]
           ^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/ima/envs/qiskit/lib/python3.12/site-packages/qiskit_ibm_runtime/base_primitive.py", line 176, in _run
    validate_isa_circuits([pub.circuit], self._backend.target)
  File "/Users/ima/envs/qiskit/lib/python3.12/site-packages/qiskit_ibm_runtime/utils/validations.py", line 88, in validate_isa_circuits
    message = is_isa_circuit(circuit, target)
              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/ima/envs/qiskit/lib/python3.12/site-packages/qiskit_ibm_runtime/utils/utils.py", line 117, in is_isa_circuit
    return _is_isa_circuit_helper(circuit, target, qubit_map)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/ima/envs/qiskit/lib/python3.12/site-packages/qiskit_ibm_runtime/utils/utils.py", line 79, in _is_isa_circuit_helper
    instruction.operation.params[0] < 0.0
TypeError: '<' not supported between instances of 'ParameterExpression' and 'float'

this PR

(no output)

This PR also removes redundant white spaces in the error message in the range [0, pi/2]. The full message is as follows.

qiskit_ibm_runtime.exceptions.IBMInputValueError: 'The instruction rzz on qubits (0, 1) is supported only for angles in the             range [0, pi/2], but an angle of 200.0 has been provided. Circuits that do not match the target hardware definition are no longer supported after March 4, 2024. See the transpilation documentation (https://docs.quantum.ibm.com/guides/transpile) for instructions to transform circuits and the primitive examples (https://docs.quantum.ibm.com/guides/primitives-examples) to see this coupled with operator transformations.'

Details and comments

Note that I think this PR needs to be merged to the server side too so that pubs with parameter expressions are processed without error.
E.g., cwrsqwf997wg008xfytg failed with the following error

Job not valid. '<' not supported between instances of 'ParameterExpression' and 'float'

[yaelbh]

@t-imamichi Thanks a lot for the contribution! It's great, I wrote only one small comment.

[yaelbh]

LGTM. I'll learn the consequences for #2021. But I'm curious: what made the second sub-test pass before the fix in ff75fe4?

[yaelbh]

Note lint failure.

[t-imamichi]

I forgot to remove the unnecessary import Parameter. I have fixed it just now. ff75fe4 simplified the second test by reusing the parameter p. So, it is essentially same as before.

[t-imamichi]

Thank you for your review and comments, @yaelbh.