Обсуждение: pgsql: Skip prepared_xacts test if max_prepared_transactions < 2

Skip prepared_xacts test if max_prepared_transactions < 2

This reduces maintenance overhead, as we no longer need to update the
dummy expected output file every time the .sql file changes.

Discussion: https://www.postgresql.org/message-id/1009073.1772551323@sss.pgh.pa.us
Backpatch-through: 14

Branch
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REL_15_STABLE

Details
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https://git.postgresql.org/pg/commitdiff/a6b11ac4c42d83e0821d0b1863d4d1ebbbc1eabb

Modified Files
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src/test/regress/expected/prepared_xacts.out   |   7 +-
src/test/regress/expected/prepared_xacts_1.out | 269 +------------------------
src/test/regress/sql/prepared_xacts.sql        |   7 +-
3 files changed, 14 insertions(+), 269 deletions(-)