fix griffe

Author: Roger-luo

src/bloqade/qasm2/dialects/expr/__init__.py

@@ -1,3 +1,3 @@
-from . import emit as emit, interp as interp, lowering as lowering
+from . import emit as emit, interp as interp, _lowering as _lowering
 from .stmts import *  # noqa: F403
 from ._dialect import dialect as dialect