[#490] Properly set max slice length consdering custom type settings

iceoryx2-ffi/cxx/include/iox2/port_factory_publisher.hpp

@@ -73,18 +73,8 @@ PortFactoryPublisher<S, Payload, UserHeader>::create() && -> iox::expected<Publi
             &m_handle, static_cast<iox2_unable_to_deliver_strategy_e>(iox::into<int>(value)));
     });
     m_max_slice_len
-        .and_then([&](auto value) {
-            // The payload type used by the C API is always a [u8].
-            // Thus need to convert from N to N * sizeof(payload).
-            // TODO: Consider alignment... not aligning each element properly will impact performance
-            iox2_port_factory_publisher_builder_set_max_slice_len(
-                &m_handle, value * sizeof(typename PayloadInfo<Payload>::ValueType));
-        })
-        .or_else([&]() {
-            // Assume only one element if not otherwise specified
-            iox2_port_factory_publisher_builder_set_max_slice_len(&m_handle,
-                                                                  sizeof(typename PayloadInfo<Payload>::ValueType));
-        });
+        .and_then([&](auto value) { iox2_port_factory_publisher_builder_set_max_slice_len(&m_handle, value); })
+        .or_else([&]() { iox2_port_factory_publisher_builder_set_max_slice_len(&m_handle, 1); });
     m_max_loaned_samples.and_then(
         [&](auto value) { iox2_port_factory_publisher_builder_set_max_loaned_samples(&m_handle, value); });