in chsh_circuits, measure qubits simultaneously

[hay-k]

In principle, qiboteam/qibolab#1096 should address the issue of chsh_circuits producing different results compared to chsh_pulses*, however in the definitions of experiments it is still good to explicitly have qubits measured at once/in one circuit moment.

* The discrepancy is clearly visible in this two reports: chsh_pulses, chsh_circuits

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 97.36%. Comparing base (31efd4d) to head (c643fc0).
Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1040      +/-   ##
==========================================
+ Coverage   97.34%   97.36%   +0.02%     
==========================================
  Files         120      120              
  Lines        9750     9749       -1     
==========================================
+ Hits         9491     9492       +1     
+ Misses        259      257       -2     

Flag	Coverage Δ
unittests	97.36% <100.00%> (+0.02%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
src/qibocal/protocols/readout_mitigation_matrix.py	100.00% <100.00%> (ø)
...l/protocols/two_qubit_interaction/chsh/circuits.py	100.00% <100.00%> (ø)

... and 1 file with indirect coverage changes