[moe] Use enable_chunking func (to support disabling chunking) (#29935)

Signed-off-by: Ming Yang <minos.future@gmail.com>

vllm/model_executor/layers/fused_moe/modular_kernel.py

@@ -743,7 +743,7 @@ class FusedMoEModularKernel(torch.nn.Module):
             1,
             (
                 M
-                if not self.fused_experts.supports_chunking()
+                if not self.fused_experts.enable_chunking()
                 else min(M, envs.VLLM_FUSED_MOE_CHUNK_SIZE)
             ),
         )
@@ -786,7 +786,7 @@ class FusedMoEModularKernel(torch.nn.Module):
             is_forward_context_available()
             and get_forward_context().attn_metadata is None
         )
-        if is_profile_run and self.fused_experts.supports_chunking() and self.is_dp_ep:
+        if is_profile_run and self.fused_experts.enable_chunking() and self.is_dp_ep:
             max_workspace_13, max_workspace_2, max_fused_out_shape = (
                 self.fused_experts.workspace_shapes(
                     envs.VLLM_FUSED_MOE_CHUNK_SIZE,