Fix bugs with VF2Layout pass and Qiskit Aer 0.13 (backport #11585) #12536
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Summary
Qiskit Aer 0.13 is incompatible with the pass manager generated by
generate_preset_pass_manager
due to bugs with how VF2Layout pass handles its Target, which does not contain a coupling map or qargs.Details and comments
This fixes these so that VF2 will only use the target generated coupling map if it is not None, and doesn't error from trying to iterate over
target.qargs
that are also None in these cases.This is an automatic backport of pull request #11585 done by [Mergify](https://mergify.com).