test: enhance logs visualization error handling and persistence tests (#13591)

## Summary

Adds **10 E2E tests** covering the two defects fixed in #13244, plus the
`SELECT *` behaviour change that shipped alongside them. Also introduces
per-shard backend configuration so the `SELECT *` tests can actually run
in CI.

## Test coverage

### `logsVisualizePersistence.spec.js` — 7 tests (quick mode **off**)

| # | Test | Defect | Fix code exercised |
|---|---|---|---|
| 1 | Renders without the false required-fields error | A |
`convertPanelData.ts` `!query?.customQuery` |
| 2 | Restores chart type, query and chart after URL refresh (h-bar) | B
| `setupLogsTab` re-run + `isInitialVisualizeRestore` |
| 3 | Re-renders after reload with the default chart type | B |
permanent No-Data half |
| 4 | Restores a non-default chart type (area) after refresh | B |
`restoreVisualizationFromUrlOnLoad()` |
| 5 | Chart still renders after reload with a VRL function applied | B |
`prepareVisualizeMode()` VRL copy |
| 6 | Never shows required-fields error toggling Visualize → Logs →
Visualize | A | manual-toggle rebuild path |
| 7 | No `SELECT *` toast opening Visualize with no stream in the URL |
B | page-load ordering guard |

**Defect A** — false "Please select required fields to render the chart"
on the custom-query Timechart panel.
**Defect B** — URL refresh produced a `SELECT *` toast plus permanent No
Data.

### `logsVisualizeSelectStar.spec.js` — 3 tests (quick mode **on**,
dedicated shard)

| # | Test | Behaviour verified | Call site |
|---|---|---|---|
| 8 | Table chart on `SELECT *` → toast shown **and** chart type reverts
| Table is blocked | `Index.vue:2265` (watcher) |
| 9 | Histogram chart on `SELECT *` → no toast, renders |
Line/bar/area/scatter allowed | entry path |
| 10 | `SELECT *` line chart survives browser refresh → no toast, state
restored | Restore path doesn't re-emit | `Index.vue:2465` (restore) |

## Infrastructure changes

| File | Change | Why |
|---|---|---|
| `ci_matrix.json` | New `Logs-SelectStar` shard with
`quick_mode_enabled: "true"` | `isSelectStarForTable()` only exists when
the server runs with quick mode on |
| `playwright.yml` | Per-shard `ZO_QUICK_MODE_ENABLED` env on `Start
OpenObserve` | The flag is read once at server start — a shard is the
smallest unit that can vary it |
| `build-ci-matrix.js` | Emit `quick_mode_enabled` (defaults `"false"`)
| The field was being silently stripped by the emit whitelist |
| `logsPage.js` | 13 assertion helpers + fixed chart-type detection |
Detection read `data-selected` off the wrong element and matched retired
CSS classes, so it always returned `null` |

All 24 existing shards are unaffected — they omit the field and default
to `false`.

## Notes on test quality

- Every negative assertion ("no toast", "no error") is sequenced after a
deterministic positive end-state, and gated on a precondition so it
cannot pass vacuously.
- Toast absence is proved with a MutationObserver recorder installed
before the navigation under test, since toasts auto-dismiss.
- The quick-mode precondition is a hard assertion, not `test.skip` — a
misconfigured shard fails loudly instead of silently reporting
"skipped".

.github/scripts/build-ci-matrix.js

@@ -104,11 +104,18 @@ for (const s of include) {
 
 // Emit ONLY the fields the CI matrix consumes — disabled/_comment/notes are stripped,
 // so turned-off specs never reach `npx playwright test`.
+//
+// quick_mode_enabled is always emitted (defaulting to "false") so every shard
+// carries the key: the workflow feeds it to ZO_QUICK_MODE_ENABLED when starting
+// that shard's OpenObserve process. The flag is read once at server start, so it
+// cannot vary per test — a shard is the smallest unit that can change it.
 const matrix = include.map((s) => ({
   testfolder: s.testfolder,
   actual_folder: s.actual_folder,
   browser: s.browser || "chrome",
   run_files: s.run_files,
+  quick_mode_enabled:
+    s.quick_mode_enabled === true || s.quick_mode_enabled === "true" ? "true" : "false",
 }));
 
 process.stdout.write(JSON.stringify({ include: matrix }));