`squin.cirq.emit_circuit` not erroring when emitting a feed-forward circuit

[jon-wurtz]

The following code should error, but it does not, consistent with the .

@squin.kernel
def t_teleport_noargs():
    """
    A simple T teleportation circuit that requires mid circuit control flow.
    """
    ancilla = squin.qubit.new(1)[0]
    target = squin.qubit.new(1)[0]
    squin.gate.t(ancilla)
    squin.gate.cx(target, ancilla)
    if squin.qubit.measure(target):
        squin.gate.s(ancilla)
        squin.gate.x(ancilla)
try:
    print(squin.cirq.emit_circuit(t_teleport_noargs))
    raise(RuntimeError("Oops this should have errored."))
except Exception as e:
    print("ERROR:",e)

Instead, it generates the following printed circuit

                                   [ 0: ───X─── ]
0: ───[ 0: ───T─── ](no_rep_ids)───[       │    ]───────────────────
                                   [ 1: ───@─── ](no_rep_ids)
                                   │
1: ────────────────────────────────#2───────────────────────────M───