[DOP-26758] Allow disabling SessionMiddleware

Author: dolfinus

syncmaster/server/settings/server/session.py

@@ -101,6 +101,7 @@ class SessionSettings(BaseModel):
     model_config = ConfigDict(extra="allow")
 
     @field_validator("secret_key")
+    @classmethod
     def _validate_secret_key(cls, value: SecretStr | None, info: ValidationInfo) -> SecretStr | None:
         if not value and info.data.get("enabled"):
             raise ValueError("secret_key is required")

syncmaster/server/settings/server/static_files.py

@@ -29,6 +29,7 @@ class StaticFilesSettings(BaseModel):
     )
 
     @field_validator("directory")
+    @classmethod
     def _validate_directory(cls, value: Path, info: ValidationInfo) -> Path:
         if not info.data.get("enabled"):
             return value