pgsql: Update query_id computation

Update query_id computation

Properly fix:

- the "ONLY" in FROM [ONLY] isn't hashed
- the agglevelsup field in GROUPING isn't hashed
- WITH TIES not being hashed (new in PG 13)
- "DISTINCT" in "GROUP BY [DISTINCT]" isn't hashed (new in PG 14)

Reported-by: Julien Rouhaud

Discussion: /messages/by-id/20210425081119.ulyzxqz23ueh3wuj@nol

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/f7a97b6ec31f3f57a6154d0039c4de81ad517064

Modified Files
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.../expected/pg_stat_statements.out | 151 +++++++++++++++++++++
.../pg_stat_statements/sql/pg_stat_statements.sql | 52 +++++++
src/backend/utils/misc/queryjumble.c | 4 +
3 files changed, 207 insertions(+)