Fix FSim decomp.

Author: WrathfulSpatula

include/qinterface.hpp

@@ -2405,8 +2405,8 @@ class QInterface : public ParallelFor {
         }
 
         CNOT(qubit1, qubit2);
-        RZ(phi, qubit2);
         RX(-theta, qubit2);
+        RZ(phi, qubit2);
         CNOT(qubit1, qubit2);
     }
 

include/qstabilizerhybrid.hpp

@@ -798,12 +798,12 @@ class QStabilizerHybrid : public QParity, public QInterface {
 
         // Near-Clifford decomposition
         CNOT(qubit1, qubit2);
-        RZ(phi, qubit2);
         IS(qubit2);
         H(qubit2);
         RZ(-theta, qubit2);
         H(qubit2);
         S(qubit2);
+        RZ(phi, qubit2);
         CNOT(qubit1, qubit2);
     }