New URL mapper endpoint doesn't process product data

[cewald]

The new /api/url/map/vue_storefront_catalog_de endpoint returns a product object to the VSF which isn't processed by the product processor. In the VSF the url action method saveFallbackData then saves this response to the elasticCache storage and the data is shown wrong in the VSF:
https://github.com/DivanteLtd/vue-storefront/blob/develop/core/modules/url/store/actions.ts#L193-L194

In my case the product prices are missing when I load a product details page because it is first loaded via the URL mapper, then stored in the cache and just loaded from that for the rest of the page.

This is related to the latest develop branch of the API and the VSF.

[cewald]

I updated the code in src/api/url/map.ts and opened a PR: #403