chore(tests): проверить backend на PostgreSQL и убрать ожидание idle пула

docs/ux-ui/acceptance/backend-postgres-regression-2026-10-12.json

@@ -0,0 +1,21 @@
+{
+  "date": "2026-10-12",
+  "block": "12.5.166",
+  "name": "mm_accept_166_1791779292730",
+  "created": true,
+  "tests": [
+    {
+      "command": "npm --prefix backend test",
+      "passed": true,
+      "profileCount": 24,
+      "durationMs": 286958,
+      "ownedHistorySqlRows": 6,
+      "sqlConfirmStabilityPassed": true,
+      "postgresUnavailableSkip": false,
+      "optionalNetworkDisabledSqlSkipped": true
+    }
+  ],
+  "databaseRemoved": true,
+  "mainServerStaticUnchanged": true,
+  "passed": true
+}