[Bugfix] Adopt ChunkGatedDeltaRule for Qwen3.5 (#34198)

Signed-off-by: Roger Wang <hey@rogerw.io>

vllm/model_executor/models/qwen3_5.py

@@ -99,6 +99,7 @@ from .interfaces import (
 )
 from .qwen2_moe import Qwen2MoeMLP as Qwen3NextMLP
 from .qwen3_next import (
+    ChunkGatedDeltaRule,
     Qwen3NextAttention,
     Qwen3NextDecoderLayer,
     Qwen3NextGatedDeltaNet,
@@ -268,6 +269,8 @@ class Qwen3_5GatedDeltaNet(Qwen3NextGatedDeltaNet):
             prefix=f"{prefix}.out_proj",
         )
 
+        self.chunk_gated_delta_rule = ChunkGatedDeltaRule()
+
         compilation_config = get_current_vllm_config().compilation_config
         if prefix in compilation_config.static_forward_context:
             raise ValueError(f"Duplicate layer name: {prefix}")