3.44.1

(fix): Fix optional query parameters with date/datetime types throwing serialization errors when undefined. Previously, optional query parameters that were named types aliasing Date (like before?: Before where Before = Date) would call jsonOrThrow unconditionally, causing “Expected Date object. Received undefined” errors when the parameter was omitted. Now the generator adds a null check for optional date/datetime query parameters, matching the behavior already used for object-type query parameters.