Fix Result constructing a pandas dataframe to compute repetitions (#3801)
Fix Result constructing a pandas dataframe to compute repetitions (#3801)

- This is really really expensive compared to looking up the value more directly like this
quantumlib/Cirq,quantumlib/Cirq,quantumlib/Cirq,balopat/Cirq,quantumlib/Cirq,quantumlib/Cirq,balopat/Cirq,balopat/Cirq