Unexpected ER_REQUIRES_PRIMARY_KEY upon adding vector key to DuckDB table

install soname 'ha_duckdb';

create table t (

  pk int primary key,

  v vector(1) not null,

  vector(v)

) engine=DuckDB;

mysqltest: At line 3: query 'create table t (

pk int primary key,

v vector(1) not null,

vector(v)

) engine=DuckDB' failed: ER_REQUIRES_PRIMARY_KEY (1173): This table type requires a primary key