test(service-analytics): pin the native face's number comparands to the engine door's answers

Each cell is asked at the cube read and the dataset door on both faces
(native statement, engine aggregate), on SQLite and on live PostgreSQL
where OS_TEST_POSTGRES_URL is set: the card's four cells refuse
INVALID_FILTER / 400 before any statement runs, a number is the control,
and a numeric string binds the number the engine handed its driver. A
registered dataset's own scope and measure filters are judged too, frozen
so narrowing must be copy-on-write.

Claude-Session: https://claude.ai/code/session_01DiCSbmJrkzNhuEAier4VoJ
Co-authored-by: Claude <noreply@anthropic.com>

Author: claude