fixed mypy warnings for files vllm/v1/attention with TEMPORARY workaround (#31465)

Signed-off-by: Zhuohao Yang <zy242@cornell.edu>
Co-authored-by: Zhuohao Yang <zy242@cornell.edu>
Co-authored-by: Wentao Ye <44945378+yewentao256@users.noreply.github.com>

tools/pre_commit/mypy.py

@@ -41,6 +41,7 @@ FILES = [
     "vllm/usage",
     "vllm/utils",
     "vllm/worker",
+    "vllm/v1/attention",
     "vllm/v1/core",
     "vllm/v1/engine",
     "vllm/v1/executor",
@@ -60,7 +61,6 @@ SEPARATE_GROUPS = [
     "vllm/lora",
     "vllm/model_executor",
     # v1 related
-    "vllm/v1/attention",
     "vllm/v1/kv_offload",
     "vllm/v1/spec_decode",
     "vllm/v1/structured_output",