fix(traces): trace-log correlation fixes and Trace Graph height (#13901)

## Problem

Four defects around traces and the trace↔log correlation flows:

1. **Trace Graph is clipped.** The service map renders inside a 200px
band, vertically centred in an otherwise empty pane, instead of using
the available height.
2. **A span row's View Logs goes nowhere.** In OSS builds it navigates
to `/logs?stream=&from=NaN&to=NaN`; the logs page drops the filter and
falls back to its default window, so the user gets an unfiltered result
set instead of that span's logs.
3. **The log detail drawer has no View Trace button.** Opening the trace
for a log record only works from the inline expanded row.
4. **View Trace lived inside the JSON tab**, so it disappeared when
switching to Table.

## Root causes

**Trace Graph.** The ancestor chain was already correct — the sibling
Waterfall tab fills the same box. Only the leaf was clamped: the chart
carried `h-50! min-h-50!` (12.5rem, `!important`), which beat its own
root `h-full w-full`. That clamp dates to when the map lived in a small
collapsible timeline strip, where 200px was the intended design. When it
was promoted to a full-height tab, the scoped rule `.trace-details
.trace-chart-height { height: 12.5rem }` was left behind and its
two-class specificity silently defeated the `h-full!` added at the time.
The later design-token migration deleted the rule but preserved the
rendered result by translating it into utilities, which made the clamp
look deliberate.

**Span View Logs.** `buildQueryDetails()` reads the raw API shape
(`start_time`/`end_time`, nanoseconds), but the waterfall passes
formatted nodes, which `getFormattedSpan()` rebuilds as a fresh object
literal — camelCase, times as `startTimeUs`/`endTimeUs` in microseconds,
snake_case originals dropped. Reading `start_time` off one yields
`undefined`, hence `NaN`. The helper already had a `spanId || span_id`
fallback for the id, which is why the query string was correct while the
window was not.

**Drawer View Trace.** `JsonPreview` decides whether to offer the action
once, in `onBeforeMount`. `DetailTable` fills `rowData` in an `async
created()` — the `await` defers assignment past the child's mount even
though the work is synchronous — so the preview mounted with an empty
record, the check failed, the traces streams were never fetched, and
nothing recomputed it.

## Changes

- Trace Graph chart uses `h-full`; the orphaned `trace-chart-height`
class is dropped (its rule no longer exists) and two nested wrappers
collapse into one. Matches the full-bleed pattern in `ServiceGraph.vue`.
- The span row resolves the raw span from `spanMap` before calling the
helper — the same lookup this component already does for span data, HTTP
status and events — rather than teaching the shared helper to accept two
shapes. Guarded, since a span missing `span_id` gets a synthetic id
absent from the map.
- The span row also warns instead of navigating when no logs stream is
selected. The header's own View Logs button is disabled in that state
but the row-level one is not, so it was a silent dead end.
- `JsonPreview` re-evaluates the View Trace gate when the previewed
record changes, so the flag tracks its input rather than a single
snapshot.
- The action moves to the drawer's header row beside the wrap toggle,
reachable from every tab, with `hide-view-trace` on `JsonPreview`
(mirroring the existing `hide-view-related`). The gate, stream fetch and
filter move into `useViewTraceAction` rather than being copied into
`DetailTable` — `service_streams_enabled` is already hand-rolled in
three files and drifted. `JsonPreview` keeps exposing the same names, so
its specs are untouched.

Two latent issues surfaced while moving the action:

- `hiddenMenus` is seeded as an array and only becomes a `Set` once
`MainLayout` has read `custom_hide_menus`, so `.has()` is not always
available. Both shapes are now accepted.
- `OSelect`'s root sets `w-full`, which won a plain `w-40` and pushed
the button outside the drawer — the same class-collision shape as defect
1. Pinned with `w-40!`.

## Tests

No behaviour is asserted by new specs; existing suites cover the touched
paths and pass unmodified:

- `JsonPreview.spec.ts` — 91 passed (unchanged, including the assertions
on `tracesStreams`)
- `DetailTable.spec.ts` — 70 passed, 3 skipped
- `TraceTree.spec.ts`, `useTraces.spec.ts`,
`TraceDetailsSidebar.spec.ts` — 297 passed
- `TraceDetails` suites — 234 passed
- `SearchResult.viewTrace.spec.ts`,
`CorrelatedLogsTable.viewTrace.spec.ts` — passed

Prettier and ESLint are clean on every touched file.

## Verification

Checked against live trace and log data sharing a trace id:

- Trace Graph fills its pane (measured 549px where it previously
measured 200px), survives a tab round-trip, and reflows on window
resize.
- A span row's View Logs lands on `/logs` with the span+trace filter and
a ±60s window whose bounds match the span's real timestamps exactly;
with no stream selected it warns and does not navigate.
- The drawer's header shows the picker and button on both the JSON and
Table tabs with no overflow, and opens the trace with the correct id and
a ±15 min window.
- Console clean across every navigation.

---------

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

scripts/translations/.translation_state.json

@@ -14312,6 +14312,7 @@
     "unknownService": "30dbef66f0d96ed5",
     "viewFilters": "6fae22556dc2d946",
     "viewLogs": "e087f046dc3cda9a",
+    "viewLogsUnavailable": "e2468fc4f70cc910",
     "waterfall": "6b53bc225e0aae1d"
   },
   "user": {