JSON-LD language information incorrect for title field

[bseeger]

The JSON-LD for the title field is incorrect, when it's in a language other than English.

Here's an example of a title that's in French, where it renders incorrectly.

"http://purl.org/dc/terms/title":[{"@value":"Orgueil et Pr\u00e9jug\u00e9s","@language":"en"}]

The JSON-LD algorithm needs to consider the field_title_language when creating the JSON-LD for the title field.

The "en" above comes from Drupal directly, I think, as the site itself doesn't know about other languages. We can use hook_jsonld_alter_normalized_array to override this particular setup. For reference, here's a spot where it's used: https://github.com/Islandora/controlled_access_terms/blob/8.x-1.x/controlled_access_terms.module#L26

We could create this hook in the idc_defaults as well and make the title field render in JSON-LD correctly via that.

[bseeger]

This might be a good candidate for fixing post-launch.