As a Lexeme creator I want the spelling variant of my Lexeme to be inferred from the language of the Lexeme if possible.
**Problem:**
We want to get the spelling variant from the Item of the language if possible.
**BDD**
GIVEN the Special:New Lexeme page
WHEN the editor selects the language of the Lexeme
AND the language’s Item has a P218 (ISO 639-1 code) statement
THEN we use the value of that statement as the spelling variant of the new Lexeme
AND the spelling variant lookup is not shown
**Acceptance criteria:**
[ ] spelling variant is inferred from the Item for the language
[ ] spelling variant input is not shown when it can be inferred from the language’s Item
**Notes:**
* this is supposed to work exactly like in the current implementation of Special:New Lexeme
* The Property used should be https://www.wikidata.org/wiki/Property:P218 (double check this in the existing implementation)