还原误删代码

vllm/v1/attention/backends/mla/common.py

@@ -214,6 +214,7 @@ from vllm.platforms import current_platform
 from vllm.utils import cdiv, round_down, is_pin_memory_available
 from vllm.v1.attention.backends.utils import CommonAttentionMetadata
 from vllm.v1.kv_cache_interface import AttentionSpec
+from vllm.v1.worker.block_table import BlockTable
 
 try:
     from vllm.vllm_flash_attn import flash_attn_varlen_func