BUG #18628: Race condition during attach/detach partition breaks constraints of partition having foreign key

The following bug has been logged on the website:

Bug reference: 18628
Logged by: Alexander Lakhin
Email address: exclusion(at)gmail(dot)com
PostgreSQL version: 17rc1
Operating system: Ubuntu 22.04
Description:

The following script:
for ((i=1;i<=100;i++)); do
psql -q -c "DROP TABLE IF EXISTS pt, p1, p2 CASCADE;"

echo "
CREATE TABLE pt (id int PRIMARY KEY, rid int,
FOREIGN KEY (rid) REFERENCES pt(id))
PARTITION BY LIST (id);

CREATE TABLE p1 PARTITION OF pt FOR VALUES IN (1);
CREATE TABLE p2 (id int PRIMARY KEY, rid int);
" | psql -q

psql -c "ALTER TABLE pt DETACH PARTITION p1;" &
psql -c "ALTER TABLE pt ATTACH PARTITION p1 FOR VALUES IN (1);" &
psql -c "ALTER TABLE pt ATTACH PARTITION p2 FOR VALUES IN (2);"
wait

echo "
ALTER TABLE pt DETACH PARTITION p1;
" | psql 2>&1 | grep 'could not find' && break;
done

psql -c "
SELECT c.conname, c.oid, t.tgname, tgtype
FROM pg_trigger t, pg_constraint c, pg_class cl
WHERE tgconstraint = c.oid AND conrelid = cl.oid AND
cl.relname = 'p1';"

ends up with:
ERROR: could not find ON INSERT check triggers of foreign key constraint
16409

and the p1 constraints at the end are:
conname | oid | tgname | tgtype
-------------+-------+------------------------------+--------
p1_rid_fkey | 16409 | RI_ConstraintTrigger_a_16410 | 9
p1_rid_fkey | 16409 | RI_ConstraintTrigger_a_16411 | 17
pt_rid_fkey | 16399 | RI_ConstraintTrigger_c_16400 | 5
pt_rid_fkey | 16399 | RI_ConstraintTrigger_c_16401 | 17
(4 rows)

Whilst when the partition is in normal conditions, it's constraints are:
conname | oid | tgname | tgtype
-------------+-------+------------------------------+--------
pt_rid_fkey | 19171 | RI_ConstraintTrigger_a_19182 | 9
pt_rid_fkey | 19171 | RI_ConstraintTrigger_a_19183 | 17
pt_rid_fkey | 19171 | RI_ConstraintTrigger_c_19172 | 5
pt_rid_fkey | 19171 | RI_ConstraintTrigger_c_19173 | 17

Reproduced on REL_15_STABLE (starting from 4566345cf) .. master.