Fix/trashcan restore wal barrier - #54

issues found

SA4021: x = append(y) is equivalent to x = y (staticcheck)

SA4021: x = append(y) is equivalent to x = y (staticcheck)

func `(*TriggerCacheTestSuite).trigCtx` is unused (unused)

field `prometricsUpdatedTime` is unused (unused)

Error return value of `container.Terminate` is not checked (errcheck)

Error return value of `watcher.Stop` is not checked (errcheck)

Error return value of `tx.Rollback` is not checked (errcheck)

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/checkout@v3, actions/setup-go@v4, golangci/golangci-lint-action@v3. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/

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