Describe the bug
I encountered an error when trying to get size of vle edge array in where clause which should have executed without error.

How are you accessing AGE (Command line, driver, etc.)?

• terminal

What data setup do we need to do?

SELECT * FROM cypher('graph',$$
    CREATE (n)-[:KNOWS {n:'hello'}]->({n:'hello'})
$$) as (a agtype);

What is the command that caused the error?

SELECT * FROM cypher('graph', $$
    MATCH (m)-[v *]->(b) 
    WHERE size(v) >1
    RETURN b
$$) AS (a agtype);

ERROR:  size() unsupported argument

Expected behavior
Should have returned

 {"id": 281474976710658, "label": "", "properties": {"n": "hello"}}::vertex

Environment (please complete the following information):

• latest (PG13 master)

Additional context
same error exists in all array functions i.e. they dont recognize VPC.