🐛 datahub client's upsert_table method is wiping data product metadata

[LavMatt]

Describe the bug.

When using the upsert_table method to create a table within a data product, after a data product is created with all of its properties we then do another upsert on that data product, to associate datasets with it, without passing any of the data products metadata to it other than the assets that are associated with it, this line

We need to make sure either data_product_metadata that is passed to the upsert_table method or the existing data product metadata, are included in the DataProductPropertiesClass used for the aspect of the metadata_event

To Reproduce

1. run the test here
2. observe the given data product description does not appear.

Expected Behaviour

we run the test or any other ingestion of metadata and metadata for data products persist.

Additional context

No response