PauliOp.adjoint() does not return correct value

[king-p3nguin]

Environment

• Qiskit Terra version: 0.24.0.dev0+e981b7e
• Python version: 3.8.16
• Operating system: Linux

What is happening?

PauliOp.adjoint() does not return a correct answer like SparsePauliOp.adjoint() does.

How can we reproduce the issue?

from qiskit.opflow.primitive_ops import PauliOp
from qiskit.quantum_info import Pauli, SparsePauliOp

sparse_pauli_op = SparsePauliOp(["iX"], [3.0])
expected = SparsePauliOp(["-iX"], [3.0])
assert sparse_pauli_op.adjoint() == expected # this is OK

pauli_op = PauliOp(Pauli("X"), coeff=3j)
expected = PauliOp(Pauli("X"), coeff=-3j)
assert pauli_op.adjoint() == expected # this is also OK

pauli_op = PauliOp(Pauli("iX"), coeff=3)
expected = PauliOp(Pauli("-iX"), coeff=3)
assert pauli_op.adjoint() == expected # returns AssertionError

What should happen?

The code above should not return AssertionError.

Any suggestions?

No response