SQL: Enhance error messages for ordinals and ref aliases

[matriv]

Currently the Verifier produces error messages that refer to the original position of the referenced field in the SELECT clause instead of the position where the offending field is actually used. e.g.:

SELECT ST_AsWKT(shape) AS s FROM test WHERE s = 'point (10 20)'

Produces an error message like:

1:17: geo shapes cannot be used for filtering

instead of mentioning position: 1:45 and maybe the reference to the original field shape

[elasticmachine]

Pinging @elastic/es-search (:Search/SQL)

[elasticsearchmachine]

Pinging @elastic/es-analytical-engine (Team:Analytics)

[wchaparro]

Superceded by ES|QL