Fix StatevectorSampler
to raise an error if a circuit with c_if is passed (backport #12842)
#12851
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Summary
StatevectorSampler
cannot handle both control flow and c_if becauseStatevector
cannot.But, it ignores
c_if
by mistake. This PR makesStatevectorSampler
raise an error if a circuit with c_if is passed.A unit test of
StatevectorSampler
usedc_if
accidentally. So, this PR also fixes the case without passing c_if toStatevectorSampler
.Fixed #12281
Details and comments
This is an automatic backport of pull request #12842 done by [Mergify](https://mergify.com).