Switch Discover views from the View as menu

## Summary

Discover replaces the Documents, Patterns, and Field statistics tabs with a toolbar dropdown. The count stays on the left. A View as button opens Documents, Patterns, and Field statistics. Several Discover pages still say tab and show the old toolbar. Screenshots on those pages need an update.

**Why this needs docs:** Published Discover how-tos still tell users to click tabs that no longer exist.

## Resources

- PR [#282141](https://github.com/elastic/kibana/pull/282141) — [Discover] Replace view mode tabs with a toolbar dropdown selector

Screenshots from PR


## Availability

| Channel | Details |
|---------|---------|
| **Stack** | v9.6.0 |
| **Serverless** | Aug 17–Aug 21 |
| **Feature flag** | None — active by default |

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*Created with [Docs Quest Scanner](https://github.com/florent-leborgne/docs-quest-scanner) by @florent-leborgne*

## Suggested edits

[Run a pattern analysis on your log data](https://www.elastic.co/docs/explore-analyze/discover/run-pattern-analysis-discover) > Pattern analysis steps
- **What the docs say:** Click the Patterns tab next to Documents and Field statistics.
- **What to add:** Replace the tab instruction. Tell users to open View as and select Patterns. Flag the screenshot for the old tab bar. Applies from 9.6.0 and in serverless.

[View field statistics](https://www.elastic.co/docs/explore-analyze/discover/show-field-statistics) > Open Field statistics
- **What the docs say:** Click Field statistics. The table summarizes how many documents in the sample contain each field.
- **What to add:** Say to open View as and select Field statistics. The click-the-name wording is now incomplete next to the old tab layout in the screenshot. Applies from 9.6.0 and in serverless.