MAPI Item dcrUri only returns if article supported in PROD

[shesah]

The apps call item endpoint when trying to deep link into an article. If this endpoint has dcrUri the apps render the article using dcr, other wise they go to old templates.

For example looking at this https://mobile.guardianapis.com/uk/items/society/2024/nov/11/assisted-dying-bills-strict-safeguards-to-include-long-jail-terms-for-coercion you can see the links object field has dcrUri.

We noticed that Mapi is only returning dcrUri if the article is supported in PROD. Because of this, hence currently deeplinking to a live blog doesn't use dcr in the beta app. https://mobile.guardianapis.com/uk/items/politics/live/2024/nov/12/keir-starmer-labour-kim-leadbeater-assisted-dying-bill-uk-politics-news-updates

To fix this, we would need to add 2 fields to the links object: betaDcrUri & prodDcrUri

After this changed is released, we can ask the ios/android to start making use of these fields.