fix(api): place per-output sent events in Events Out column (#24951)

* fix(top): place per-output sent events in Events Out column

Output sub-rows for components with multiple output ports (e.g. route
transforms with `_unmatched`, `success` outputs) were placing the
per-output sent events metric in column index 5 (Bytes In) instead of
column index 6 (Events Out).

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

* add scopes

* changelog: add entry for PR #24951

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

* fix name

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Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>