pgsql: injection_points: Disable one permutation in isolation test "bas

injection_points: Disable one permutation in isolation test "basic"

The first permutation done in the test does a wait, a wakeup then a
detach. It is proving to be unstable in the CI for FreeBSD (Windows and
Linux are stable). The failure shows that the wait is so slow to finish
after being woken up that the detach has the time to finish before the
wait, messing up with the expected output.

There may be a platform-specific issue going on here, but for now
disable this permutation to make the CI runs more stable.

Discussion: https://postgr.es/m/ZxrnSGdNtQWAxE3_@paquier.xyz

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/9f00edc2288892a55e2bef464f555e9f5396ff1c

Modified Files
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.../modules/injection_points/expected/basic.out | 26 ----------------------
src/test/modules/injection_points/specs/basic.spec | 3 ++-
2 files changed, 2 insertions(+), 27 deletions(-)