fix: request failures when work_mem is set on a role

[laurenceisla]

Closes #4955

[steve-chavez]

@laurenceisla Weird failure on pg 16 https://github.com/PostgREST/postgrest/actions/runs/26900983802/job/79352994410?pr=4977

[laurenceisla]

@laurenceisla Weird failure on pg 16 https://github.com/PostgREST/postgrest/actions/runs/26900983802/job/79352994410?pr=4977

I rerun and it looks like it's working now. Maybe transient? (schema cache reload timing and stuff)

[steve-chavez]

I rerun and it looks like it's working now. Maybe transient? (schema cache reload timing and stuff)

Right, it was this test first time seeing it fail randomly:

postgrest/test/io/test_io.py

Line 1391 in fae5817

def test_schema_cache_concurrent_notifications(slow_schema_cache_env):

#4962 might help with that.

[postgrest-ci]

Backport failed for v14, because it was unable to cherry-pick the commit(s).

Please cherry-pick the changes locally and resolve any conflicts.

git fetch origin v14
git worktree add -d .worktree/backport-4977-to-v14 origin/v14
cd .worktree/backport-4977-to-v14
git switch --create backport-4977-to-v14
git cherry-pick -x 416a15480f32c592482284318985c0c758814b8b

[steve-chavez]

@taimoorzaeem Could you help backporting this one? 🙏