[Lint] Fix Optional[X] = (None,) typo defaults in two dataclasses (#25252)

Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

python/sglang/lang/ir.py

@@ -30,9 +30,9 @@ class SglSamplingParams:
     presence_penalty: float = 0.0
     ignore_eos: bool = False
     return_logprob: Optional[bool] = None
-    logprob_start_len: Optional[int] = (None,)
-    top_logprobs_num: Optional[int] = (None,)
-    return_text_in_logprobs: Optional[bool] = (None,)
+    logprob_start_len: Optional[int] = None
+    top_logprobs_num: Optional[int] = None
+    return_text_in_logprobs: Optional[bool] = None
     json_schema: Optional[str] = None
 
     # for constrained generation, not included in to_xxx_kwargs

python/sglang/srt/mem_cache/hicache_storage.py

@@ -36,7 +36,7 @@ class HiCacheStorageConfig:
 
 @dataclass
 class HiCacheStorageExtraInfo:
-    prefix_keys: Optional[List[str]] = (None,)
+    prefix_keys: Optional[List[str]] = None
     extra_info: Optional[dict] = None