Drop "Lock" suffix from LWLock wait event names
Commit
da952b415f44 unintentially reverted the SQL-visible part of
commit
14a910109126, which breaks queries joining pg_wait_events with
pg_stat_acivity. Remove the suffix again.
Backpatch to 17.
Reported-by: Christophe Courtois <christophe.courtois@dalibo.com>
Author: Bertrand Drouvot <bertranddrouvot.pg@gmail.com>
Discussion: https://postgr.es/m/18728-
450924477056a339%40postgresql.org
Discussion: https://postgr.es/m/Z01w1+LihtRiS0Te@ip-10-97-1-34.eu-west-3.compute.internal