chore: add ast-grep rule to convert Optional[T] to T | None (#25560)

Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>

api/core/tools/entities/common_entities.py

@@ -1,5 +1,3 @@
-from typing import Optional
-
 from pydantic import BaseModel, Field
 
 
@@ -9,9 +7,9 @@ class I18nObject(BaseModel):
     """
 
     en_US: str
-    zh_Hans: Optional[str] = Field(default=None)
-    pt_BR: Optional[str] = Field(default=None)
-    ja_JP: Optional[str] = Field(default=None)
+    zh_Hans: str | None = Field(default=None)
+    pt_BR: str | None = Field(default=None)
+    ja_JP: str | None = Field(default=None)
 
     def __init__(self, **data):
         super().__init__(**data)