Rename SLRU elements in view pg_stat_slru

The new names are intended to match those in an upcoming patch that adds
a few GUCs to configure the SLRU buffer sizes.

Backwards compatibility concern: this changes the accepted names for
function pg_stat_slru_rest().  Since this function recognizes "any other
string" as a request to reset the entry for "other", this means that
calling it with the old names would silently reset "other" instead of
doing nothing or throwing an error.

Reviewed-by: Andrey M. Borodin <x4...@yandex-team.ru>
Discussion: https://postgr.es/m/202402261616.dlriae7b6emv@alvherre.pgsql

Branch
------
master

Details
-------
https://git.postgresql.org/pg/commitdiff/bcdfa5f2e2f274caeed20b2f986012a9cb6a259c

Modified Files
--------------
doc/src/sgml/monitoring.sgml            | 14 +++++------
src/backend/access/transam/clog.c       |  2 +-
src/backend/access/transam/commit_ts.c  |  2 +-
src/backend/access/transam/multixact.c  |  4 +--
src/backend/access/transam/subtrans.c   |  2 +-
src/backend/commands/async.c            |  2 +-
src/backend/storage/lmgr/predicate.c    |  2 +-
src/include/utils/pgstat_internal.h     | 14 +++++------
src/test/isolation/expected/stats.out   | 44 ++++++++++++++++-----------------
src/test/isolation/expected/stats_1.out | 44 ++++++++++++++++-----------------
src/test/isolation/specs/stats.spec     |  4 +--
src/test/regress/expected/stats.out     | 14 +++++------
src/test/regress/sql/stats.sql          | 14 +++++------
13 files changed, 81 insertions(+), 81 deletions(-)

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