Preserve native loaded-state aliases for canonical named relations #242

Finding

The latest generated relation metadata uses canonical school_list; the
runtime-owned Java example previously accepted isPropertyLoaded("schoolList").
Fixed fields already share one bit across canonical/member/column aliases, but
named relations lack the corresponding alias normalization. Changing the
example assertion to canonical spelling would drop its existing native-API
coverage instead of preserving the contract.

Bounded correction

• Derive a value-free canonical/native relation-name map once per FieldLayout.
• Normalize named selections at projection, update and lookup boundaries;
  retain only one canonical marker, never two markers per row.
• Keep fixed-field bit lookup and literal #dynamic_field codes unchanged.
• Restore the existing Java-member assertions, add focused geometry tests,
  and rerun the existing generated graph gate.

This is separate from the E exception-path naming decision and does not choose
that policy. Tracked with teaql/teaql-conformance#210. Local validation only;
no publication, tag push or formal P1 merge.