Disallow creating arrays of fixed width base type without the max length being specified

Today, we allow a user to specify an array who base type is of fixed width as:

CREATE TABLE foo (k BINARY_ARRAY NOT NULL PRIMARY KEY)

This shouldn't be allowed as for fixed width data types like CHAR and BINARY, specifying a max length is mandatory.

These alternate statements properly enforce the max length constraint:
CREATE TABLE foo (k BINARY ARRAY NOT NULL PRIMARY KEY)
CREATE TABLE foo (k BINARY[] NOT NULL PRIMARY KEY)