[BugFix][XPU] Fix kv_cache management bug (#7420)

Author: ddchenhao66

fastdeploy/worker/xpu_model_runner.py

@@ -1259,7 +1259,11 @@ def initialize_kv_cache(self, profile: bool = False) -> None:
         # Check if gpu runner needs to create kv cache
         # 1. During profiling, it creates its own kv cache.
         # 2. GPU runner creates kv cache tensor unless p/d disaggregation is enabled.
-        create_cache_tensor = profile or self.scheduler_config.splitwise_role == "mixed"
+        create_cache_tensor = profile or not (
+            self.fd_config.cache_config.num_cpu_blocks > 0
+            or self.fd_config.cache_config.kvcache_storage_backend
+            or self.fd_config.scheduler_config.splitwise_role != "mixed"
+        )
         if not create_cache_tensor:
             logger.info(f"Waiting for cache managers to create kv cache.. {cache_ready_signal.value}")
             while cache_ready_signal.value[local_rank] != 1: