Reconsider the land-on-Overview redirect when the analytics probe fails

Follow-up from the [PR #1476 — keep Overview usable when the analytics capability probe fails](https://github.com/HarperFast/studio/pull/1476) approval review (non-blocking suggestion that merged with the PR).

Current behavior: when the `get_analytics` capability probe fails while the user is on a chart tab, `StatusTabs` does a one-shot `replace` navigation to the Overview tab — landing them on live data (`get_status`-backed) instead of a dead panel. Chart tabs remain reachable and show the Retry notice.

The reviewer's question: silently replacing the user's explicitly-opened chart tab may be more surprising than staying put and showing the Retry/unavailable notice in place. It's a deliberate, documented UX judgment call ("open on live data"), but worth a product decision:

- **Keep** (current): failure lands you somewhere useful; the notice explains chart tabs.
- **Stay put**: no navigation on failure; the opened tab shows the analytics-unavailable notice with Retry, and Overview is one click away.

Whichever way, the one-shot/bounce-back guard logic in `StatusTabs.tsx` stays (it's what makes either behavior stable). Regression tests for the redirect live in `__tests__/StatusTabs.capability-gating.test.tsx` and would flip with the decision.

Filed from merged-PR review follow-ups.

Comment generated by kAIle (Claude Fable 5)