fix: cypher pushdown to sql was broken with respect to property names

[adsharma]

install duckdb; load duckdb; 
ATTACH 'demo.duckdb' AS demo (dbtype duckdb); 
CREATE REL TABLE lives_in2 (FROM demo.user TO demo.city) WITH (storage = 'demo.lives_in');

and then:

lbug> match (a:demo.user)-[b:lives_in2]->(c:demo.city) return a.*, b.*, c.*;
┌───────┬─────────┬───────┬───────────┬───────────┬───────┬───────────┬──────────────┐
│ a.id  │ a.name  │ a.age │ b.user_id │ b.city_id │ c.id  │ c.name    │ c.population │
│ INT64 │ STRING  │ INT32 │ INT64     │ INT64     │ INT64 │ STRING    │ INT32        │
├───────┼─────────┼───────┼───────────┼───────────┼───────┼───────────┼──────────────┤
│ 2     │ Karissa │ 40    │ 2         │ 1         │ 1     │ Waterloo  │ 150000       │
│ 3     │ Zhang   │ 50    │ 3         │ 2         │ 2     │ Kitchener │ 200000       │
│ 4     │ Noura   │ 25    │ 4         │ 3         │ 3     │ Guelph    │ 75000        │
│ 1     │ Adam    │ 30    │ 1         │ 1         │ 1     │ Waterloo  │ 150000       │
└───────┴─────────┴───────┴───────────┴───────────┴───────┴───────────┴──────────────┘

This was broken earlier.