StabilizerState.expectation_value can also accept SparsePauliOp

[ShellyGarion]

Summary

close #12422

Details and comments

[qiskit-bot]

One or more of the following people are relevant to this code:

• @Qiskit/terra-core

[coveralls]

Pull Request Test Coverage Report for Build 12374782380

Warning: This coverage report may be inaccurate.

This pull request's base commit is no longer the HEAD commit of its target branch. This means it includes changes from outside the original pull request, including, potentially, unrelated coverage changes.

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Details

• 7 of 8 (87.5%) changed or added relevant lines in 1 file are covered.
• 75 unchanged lines in 7 files lost coverage.
• Overall coverage increased (+0.005%) to 88.955%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
qiskit/quantum_info/states/stabilizerstate.py	7	8	87.5%

Files with Coverage Reduction	New Missed Lines	%
qiskit/circuit/library/quantum_volume.py	1	93.18%
crates/accelerate/src/unitary_synthesis.rs	1	92.2%
qiskit/circuit/library/arithmetic/adders/adder.py	2	91.49%
crates/qasm2/src/parse.rs	6	97.62%
crates/qasm2/src/lex.rs	7	92.48%
crates/circuit/src/circuit_data.rs	19	95.43%
qiskit/transpiler/passes/synthesis/hls_plugins.py	39	87.02%

Totals
Change from base Build 12182055039:	0.005%
Covered Lines:	79431
Relevant Lines:	89293

---

💛 - Coveralls

[kevinsung]

TypeError might be more appropriate (but if this is Qiskit's convention then it's fine)

[ShellyGarion]

I see that also previously it was a QiskitError:

qiskit/qiskit/quantum_info/states/stabilizerstate.py

Line 272 in 1263d82

raise QiskitError("Operator for expectation value is not a Pauli operator.")

[Cryoris]

Some tiny comments, otherwise LGTM 👍🏻