fix(ext.commands): Fixed required=False when default is None

discord/ext/commands/core.py

@@ -565,7 +565,7 @@ async def dispatch_error(self, ctx: Context, error: Exception) -> None:
     async def transform(self, ctx: Context, param: inspect.Parameter) -> Any:
         if isinstance(param.annotation, Option):
             default = param.annotation.default
-            required = param.annotation.required or default is None
+            required = param.annotation.required and default is None
         else:
             default = param.default
             required = default is param.empty