Apply suggestions from code review

Co-authored-by: Brian Schubert <brianm.schubert@gmail.com>

Author: wvanbergen

stubs/Flask-Cors/flask_cors/core.pyi

@@ -13,10 +13,10 @@ _MultiDict: TypeAlias = Any  # werkzeug is not part of typeshed
 @type_check_only
 class _Options(TypedDict, total=False):
     resources: dict[str, dict[str, Any]] | list[str] | str | None
-    origins: str | Pattern[str] | Iterable[str | Pattern[str]] | None
-    methods: str | list[str] | None
-    expose_headers: str | list[str] | None
-    allow_headers: str | list[str] | None
+    origins: Iterable[str | Pattern[str]]
+    methods: str | list[str] | None
+    expose_headers: str | list[str] | None
+    allow_headers: Iterable[str | Pattern[str]]
     supports_credentials: bool | None
     max_age: timedelta | int | str | None
     send_wildcard: bool | None

stubs/Flask-Cors/flask_cors/extension.pyi

@@ -14,7 +14,7 @@ class CORS:
         app: flask.Flask | flask.Blueprint | None = None,
         *,
         resources: dict[str, dict[str, Any]] | list[str] | str | None = ...,
-        origins: str | Pattern[str] | Iterable[str | Pattern[str]] | None = ...,
+        origins: str | Pattern[str] | Iterable[str | Pattern[str]] = ...,
         methods: str | list[str] | None = ...,
         expose_headers: str | list[str] | None = ...,
         allow_headers: str | list[str] | None = ...,