Fix inconsistency between qubits measurements in readout circuits and real measurement circuits

[ddddddanni]

There is an inconsistency on qubits measurements in readout circuits and measurement circuits. The measurement circuits always measure the full circuit set of qubits, while the qubits being measured in readout/calibration circuits are based only on the qubits present in the Pauli strings.
In this PR, I have updated the circuit generation to only measure the qubits relevant to the Pauli group being processed.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 99.56%. Comparing base (6871bdb) to head (2483167).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #7801      +/-   ##
==========================================
- Coverage   99.57%   99.56%   -0.01%     
==========================================
  Files        1102     1102              
  Lines       98638    98638              
==========================================
- Hits        98218    98213       -5     
- Misses        420      425       +5     

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[ddddddanni]

@eliottrosenberg Can you take a look at this? Thank!

[eliottrosenberg]

LGTM! Thanks, @ddddddanni!

[NoureldinYosri]

please add a test

[pavoljuhas]

Can you please add a test that will fail before and pass after this PR?

Also, looking at the code we can avoid some complicated casting by using a separate variable for the sweep vs no-sweep cases. Please see this patch - pr7801-with-less-casting.patch.txt (can be applied with git apply PATCH_FILE).