Fix Qwen3 crash

PiperOrigin-RevId: 835409126

Author: Google-ML-Automation

src/MaxText/layers/qwen3.py

@@ -708,7 +708,7 @@ def __call__(
     # Loop over the number of sub-layers that make up one repeating pattern.
     for i in range(cfg.inhomogeneous_layer_cycle_interval):
       layer = getattr(self, f"layer_{i}")
-      x = layer(
+      x, _ = layer(
           x,
           decoder_segment_ids,
           decoder_positions,