Infinite loop when looping through kernel builder qubits

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Describe the bug

The following will run an infinite loop:

import cudaq

kernel = cudaq.make_kernel()
qubits = kernel.qalloc(2)

for qubit in qubits:
    print(qubit)

which prints

.
.
.
Value(%1060 = quake.extract_ref %0[%c1059_i64] : (!quake.veq<2>, i64) -> !quake.ref)
Value(%1061 = quake.extract_ref %0[%c1060_i64] : (!quake.veq<2>, i64) -> !quake.ref)
Value(%1062 = quake.extract_ref %0[%c1061_i64] : (!quake.veq<2>, i64) -> !quake.ref)
Value(%1063 = quake.extract_ref %0[%c1062_i64] : (!quake.veq<2>, i64) -> !quake.ref)
Value(%1064 = quake.extract_ref %0[%c1063_i64] : (!quake.veq<2>, i64) -> !quake.ref)
Value(%1065 = quake.extract_ref %0[%c1064_i64] : (!quake.veq<2>, i64) -> !quake.ref)
Value(%1066 = quake.extract_ref %0[%c1065_i64] : (!quake.veq<2>, i64) -> !quake.ref)
Value(%1067 = quake.extract_ref %0[%c1066_i64] : (!quake.veq<2>, i64) -> !quake.ref)
Value(%1068 = quake.extract_ref %0[%c1067_i64] : (!quake.veq<2>, i64) -> !quake.ref)
Value(%1069 = quake.extract_ref %0[%c1068_i64] : (!quake.veq<2>, i64) -> !quake.ref)
Value(%1070 = quake.extract_ref %0[%c1069_i64] : (!quake.veq<2>, i64) -> !quake.ref)
Value(%1071 = quake.extract_ref %0[%c1070_i64] : (!quake.veq<2>, i64) -> !quake.ref)
Value(%1072 = quake.extract_ref %0[%c1071_i64] : (!quake.veq<2>, i64) -> !quake.ref)
Value(%1073 = quake.extract_ref %0[%c1072_i64] : (!quake.veq<2>, i64) -> !quake.ref)
.
.
.

Steps to reproduce the bug

See attached code

Expected behavior

We expect an error or for the loop to terminate properly.

Is this a regression? If it is, put the last known working version (or commit) here.

Not a regression

Environment

• CUDA Quantum version:
• Python version:
• C++ compiler:
• Operating system:

All latest

Suggestions

No response

Start by running the provided Python snippet using cudaq.make_kernel(), kernel.qalloc(2), and iteration over qubits. Trace how the kernel builder represents and iterates allocated qubits, then add or run a regression test for this reproducer. Done means iteration terminates after the allocated qubits or reports a defined error instead of producing unbounded extract_ref values.