Problem:
Once the new page covers at least the existing functionality of the existing page, we want to enable it in production.
For this to happen, we need at least:
- working inputs and suggesters
- help and licensing texts
- permission checks
- Lexemes created are valid
- Messages are updated (T302877, T304340)
Acceptance criteria:
- New SpecialPage is enabled in parallel to the existing one, and it is accessible at https://wikidata.org/wiki/Special:NewLexemeAlpha
- The link on Special:SpecialPages still points to the old page and the new one is not linked
- Ensure that metric tracking is set up (T303394)