[Bug] Fix circular import in forward_batch_info from runtime cp_utils import (#27014)

python/sglang/srt/model_executor/forward_batch_info.py

@@ -54,7 +54,6 @@ from sglang.srt.layers.dp_attention import (
     set_dp_buffer_len,
     set_is_extend_in_batch,
 )
-from sglang.srt.layers.utils.cp_utils import ContextParallelMetadata
 from sglang.srt.model_executor.forward_batch_deepseek_mha_mixin import (
     ForwardBatchDeepSeekMHAMixin,
 )
@@ -69,6 +68,7 @@ from sglang.srt.utils.common import ceil_align, is_pin_memory_available
 
 if TYPE_CHECKING:
     from sglang.srt.layers.logits_processor import LogitsProcessorOutput
+    from sglang.srt.layers.utils.cp_utils import ContextParallelMetadata
     from sglang.srt.managers.schedule_batch import MultimodalInputs, ScheduleBatch
     from sglang.srt.model_executor.model_runner import ModelRunner
     from sglang.srt.sampling.sampling_batch_info import SamplingBatchInfo