Flaky test `tests::deferred_points_tests::test_deferred_points_wait_false`

Visible points with wait=false: 100/100

thread 'tests::deferred_points_tests::test_deferred_points_wait_false' (16857) panicked at lib/collection/src/tests/deferred_points_tests.rs:286:5:
With wait=false, not all 100 points should be immediately visible, but found 100 visible. This means the update worker processed all operations before we could check — the indexing threshold may be too high.
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
[2026-09-15T08:45:20Z ERROR collection::update_workers::optimization_worker] Optimization error: Service runtime error: IO Error: No such file or directory (os error 2) at path "/dev/shm/test_deferred_wait_falsezmC2Ev/temp_segments/segment_builder_cnkY0o/vector_index/.atomicwriteAamHBj"