Error Analysis: anchor the detail view to the clicked cause exception

A chain renders as multiple exception rows in the call tree (e.g. NestedServletException and its cause IllegalArgumentException), all sharing the same errorKey. Clicking a cause row opens Error Analysis, but the detail view always starts at the top (the outermost exception) — it does not scroll to the clicked cause.

Expected: opening Error Analysis from a cause row anchors the detail view to that cause's card.

Tasks:

• Identify the clicked cause in the detail view — match the row's exception class name against ExceptionDetailView.errorClassName (chains repeating the same class need a tie-breaker)
• Scroll the detail view to the matched cause card on open

Starting points:

• web-frontend/.../Transaction/call-tree/callTreeTableColumns.tsx — link carries errorKey only; no per-cause identifier
• web-frontend/.../ErrorAnalysis/error-detail/ErrorAnalysisErrorDetailFetcher.tsx — renders the chain as cards; ExceptionDetailView.exceptionDepth distinguishes causes