tests to add

[pmp-p]

Some tests that are needed to check regressions in compiler/libc from emsdk and wasi robustness

---

SELECT now(),* FROM pg_timezone_names WHERE name = current_setting('TIMEZONE')

expect 1 row on emsdk
expected to fail on : wasi

---

CREATE EXTENSION IF NOT EXISTS plpgsql;
CREATE OR REPLACE PROCEDURE raise_exception() LANGUAGE plpgsql AS $$
BEGIN
    RAISE 'exception';
END;
$$;

yield

CALL raise_exception();

expect wire exception on emsdk, wasi
expected to fail on : wasi-repl