GEOMETRY column not recognized when using postgres_query()

### What happens?

I have a table in PostgreSQL with a GEOMETRY column. Since DuckDB 1.5, this GEOMETRY column is recognized during import:

```
select objectid, shape from nupla_uept limit 5;

┌──────────┬─────────────────────────────────┐
│ objectid │ shape │
│ int32 │ geometry │
├──────────┼─────────────────────────────────┤
│ 116927 │ POINT (2604833.296 1208390.399) │
│ 116928 │ POINT (2605120.181 1208221.813) │
│ 116929 │ POINT (2604777.003 1207929.125) │
│ 98169 │ POINT (2610375.849 1189134.644) │
│ 98170 │ POINT (2610409.164 1189117.758) │
└──────────┴─────────────────────────────────┘
```
However, if I make the query with `postgres_query()`, the column is not recognized:

```
select * from postgres_query('vek1', 'SELECT objectid, shape from geodb.nupla_uept') LIMIT 5;

┌──────────┬────────────────────────────────────────────────────┐
│ objectid │ shape │
│ int32 │ varchar │
├──────────┼────────────────────────────────────────────────────┤
│ 116927 │ 010100002008080000F853E3A590DF43412FDD246646703241 │
│ 116928 │ 0101000020080800000C022B1720E043419CC420D09D6F3241 │
│ 116929 │ 010100002008080000D34D628074DF434100000020796E3241 │
│ 98169 │ 0101000020080800003108ACEC63EA43411B2FDDA40E253241 │
│ 98170 │ 010100002008080000B6F3FD9474EA4341BA490CC2FD243241 │
└──────────┴────────────────────────────────────────────────────┘
```
```
It does not work with this generic statement either:

select * from postgres_query('vek1', 'select st_geometryfromtext(''POINT(2600000 1200000)'', 2056);');

┌────────────────────────────────────────────────────┐
│ st_geometryfromtext │
│ varchar │
├────────────────────────────────────────────────────┤
│ 0101000020080800000000000020D6434100000000804F3241 │
```

Is there a reason for this different behavior?

### To Reproduce

1. Attach a PostgreSQL Database with the PostGIS Extension installed
2. Execute `select * from postgres_query('vek1', 'select st_geometryfromtext(''POINT(2600000 1200000)'', 2056);');`

### OS:

Windows 11

### PostgreSQL Version:

15.14

### DuckDB Version:

1.5

### DuckDB Client:

CLI

### Full Name:

Peter Schär

### Affiliation:

Office for Geoinformation, Canton Bern, Switzerland

### Have you tried this on the latest `main` branch?

- [x] I agree

### Have you tried the steps to reproduce? Do they include all relevant data and configuration? Does the issue you report still appear there?

- [x] I agree