[Bugfix]: resolve torch.compile cache conflict between mm_encoder_tp_modes (#32842)

Signed-off-by: Hongjian Zhang <zhanghongjian@xiaohongshu.com>
Signed-off-by: Xingran Wang <wangxingran123456@outlook.com>
Co-authored-by: Xingran Wang <wangxingran123456@outlook.com>

vllm/config/multimodal.py

@@ -213,7 +213,8 @@ class MultiModalConfig:
         factors: list[Any] = [
             self.mm_encoder_attn_backend.name
             if self.mm_encoder_attn_backend is not None
-            else None
+            else None,
+            self.mm_encoder_tp_mode,
         ]
         hash_str = safe_hash(str(factors).encode(), usedforsecurity=False).hexdigest()
         return hash_str