Handle CteScan node type while determining param types
Handle CteScan node type while determining param types

Check for the CteScan node was missing in the function, resulting in
"unrecognized node type" error.

Per report from Aaron Jackson

yazun/postgres-xl,Postgres-XL/Postgres-XL,oberstet/postgres-xl,zeroae/postgres-xl,oberstet/postgres-xl,zeroae/postgres-xl,techdragon/Postgres-XL,pavanvd/postgres-xl,oberstet/postgres-xl,techdragon/Postgres-XL,ovr/postgres-xl,ovr/postgres-xl,pavanvd/postgres-xl,zeroae/postgres-xl,oberstet/postgres-xl,yazun/postgres-xl,ovr/postgres-xl,yazun/postgres-xl,yazun/postgres-xl,pavanvd/postgres-xl,oberstet/postgres-xl,zeroae/postgres-xl,Postgres-XL/Postgres-XL,Postgres-XL/Postgres-XL,techdragon/Postgres-XL,Postgres-XL/Postgres-XL,ovr/postgres-xl,zeroae/postgres-xl,pavanvd/postgres-xl,ovr/postgres-xl,techdragon/Postgres-XL,techdragon/Postgres-XL,pavanvd/postgres-xl,yazun/postgres-xl,Postgres-XL/Postgres-XL