ci: ratchet ecstore ::other(format!) error construction shrink-only (#6614)

Backlog#1845 step 2. reduce_errs buckets per-disk errors by equality, and Io equality compares the rendered message, so an other(format!(..)) error embedding per-disk detail makes N same-cause failures count as N distinct errors during quorum aggregation. The census that opened the issue counted 1,609 such sites; the production count in crates/ecstore/src is 657 today and was still growing.

Freeze it: scripts/check_error_other_format_ratchet.sh counts ::other(format! sites per file (trailing #[cfg(test)] modules excluded) against a shrink-only per-file baseline, failing on any growth and on stale entries after a shrink, following the layer-dependency-baseline model. Wired into make pre-commit / pre-pr / dev-check and the CI Quick Checks job.

Ref rustfs/backlog#1845

.github/workflows/ci.yml

@@ -142,6 +142,9 @@ jobs:
       - name: Check logging guardrails
         run: ./scripts/check_logging_guardrails.sh
 
+      - name: Check error other(format!) ratchet
+        run: ./scripts/check_error_other_format_ratchet.sh
+
       - name: Check tokio io-uring feature guard
         run: ./scripts/check_no_tokio_io_uring.sh