4.6.3
(fix): Fix Java SDK snippet and wire test generation for allow-multiple query
parameters when coerce-optional-schemas-to-nullable: true is set.
Previously, list items wrapped in optional<...> and/or nullable<...>
produced calls like .strategy(Arrays.asList(Optional.of(...))), which
failed to compile because the generated builders only expose List<T>
overloads (no List<Optional<T>> or List<Nullable<T>>). The snippet
generator now strips both optional and nullable wrappers from list
items, so the emitted code matches an existing builder signature.
