Use mdui:PrivacyStatementURL:* for privacy policy

This issue is imported from pivotal - Originaly created at May 9, 2023 by Thijs Kinkhorst

Manage stores mdui:PrivacyStatementURL:* for the privavy policy URL.

EB mistakenly (since ages) uses the field coin:eula to present in the consent screen a link to the "privacy policy", this field as the name says holds the "end user license agreement", something else.

In order to give users the correct link to the privacy policy, display mdui:PrivacyStatementURL in the consent screen in the place where now coin:eula is used. Also expose it in the consent API so Profile can make use of the field.

• mdui:PrivacyStatementURL:* is multi-lingual. Display it for the current language (i.e. if lang = NL, use mdui:PrivacyStatementURL:nl), but if this is not available; check of :en is available and use that, only if current language is not available and :en is not available, do not display anything.

Start by tracing where coin:eula is read for the consent screen and where consent metadata is exposed through the consent API. Check how the current language and English fallback are selected for multilingual fields. Done means mdui:PrivacyStatementURL is used instead, with the specified fallback behavior, and is available through the API.