fix reload return value

vllm_ascend/patch/platform/patch_core.py

@@ -1,6 +1,7 @@
 import signal
 from typing import Optional
 from logging import DEBUG
+import os
 import time
 
 from vllm.config import ParallelConfig, VllmConfig

vllm_ascend/patch/platform/patch_executor.py

@@ -31,7 +31,7 @@ def reload_vram(self) -> bool:
     time_after_reload = time.perf_counter()
     self.is_offloaded = False
     logger.info(f"Reloading VRAM costs {time_after_reload - time_before_reload:.6f} seconds.")
-    return prev_is_self
+    return all(prev_is_self)
 
 
 def determine_available_memory_idle_offload_mode(self) -> int: