pgsql: Set proargmodes for satisfies_hash_partition.

Set proargmodes for satisfies_hash_partition.

It appears that proargmodes should always be set for variadic
functions, but satifies_hash_partition had it as NULL. In addition to
fixing the problem, add a regression test to guard against future
mistakes of this type.

Branch
------
master

Details
-------
https://git.postgresql.org/pg/commitdiff/be92769e4e63de949fe3ba29e0bf5c0a96f54ae3

Modified Files
--------------
src/include/catalog/catversion.h | 2 +-
src/include/catalog/pg_proc.h | 2 +-
src/test/regress/expected/type_sanity.out | 11 +++++++++++
src/test/regress/sql/type_sanity.sql | 8 ++++++++
4 files changed, 21 insertions(+), 2 deletions(-)