Improved Language Code Mapping Visibility & Resolution

[Enkidu93]

There are many odd edge cases in which a language/script code provided by the user might ultimately be mapped either:

• in a way that the user does not expect or
• to a language/script code that is not known to NLLB even though one of its other aliases is known.

Improvements might include:

• Giving the user in SF or administrators better visibility into how the code is mapped
• Provide an opportunity for the language/script to be corrected
• Warn the user if the mapped LWC language/script is not known to NLLB

[ddaspit]

We could consider inspecting the project data to determine the script when the language tag is ambiguous.