chore(ecstore): integrate batch diagnostics for request stage work

Retain the reviewed diagnostic dependency while starting request-stage work
from current main. This integration is not a performance qualification.

Co-Authored-By: heihutu <heihutu@gmail.com>
Co-Authored-By: zhi22915 <qiuzgang@gmail.com>

scripts/check_logging_guardrails.sh

@@ -5,6 +5,7 @@ repo_root="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
 cd "$repo_root"
 
 checked_files=(
+  "crates/ecstore/src/diagnostics/batch_read_diagnostics.rs"
   "rustfs/src/main.rs"
   "rustfs/src/startup_entrypoint.rs"
   "rustfs/src/init.rs"