fix: re-export log_cp_draft_shared_kv_debug from cp_shared_kv_runtime

nsa_indexer.py imports log_cp_draft_shared_kv_debug from
cp_shared_kv_runtime, but ad358d164 defined it in nsa/utils.py.
The missing symbol caused deepseek_v2.py import to fail silently
(registry.py catches and warns), falling back to transformers.py
which loads unsharded 256-expert MoE parameters → OOM on H200.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

python/sglang/srt/layers/attention/nsa/cp_shared_kv_runtime.py

@@ -9,6 +9,7 @@ from typing import Any
 import torch
 
 from sglang.srt.environ import envs
+from sglang.srt.layers.attention.nsa.utils import log_cp_draft_shared_kv_debug  # noqa: F401
 from sglang.srt.layers.dp_attention import get_attention_cp_group
 from sglang.srt.mem_cache.cp_shared_kv_layout import CpSharedKVLayout