feat(tracemetrics): Improve samples panel rendering

[narsaynorath]

• Removes spans and logs columns
• Add call to discover endpoint to get error counts by trace ID
• Renders timestamp using the same renderer as logs

Closes LOGS-407

[linear]

LOGS-407 Render the contents for the samples tab

[seer-by-sentry]

Potential bug: The useDiscoverQuery hook is called with an undefined location variable, which will cause a runtime ReferenceError.

• Description: The useDiscoverQuery hook is called on line 56 with a location variable. However, this variable is not defined within the scope of the useTraceTelemetry hook. It is not passed as a parameter, imported, or declared locally. Since useDiscoverQuery requires location as a mandatory prop, this will result in a ReferenceError: location is not defined when the component renders and the query is executed, causing a runtime crash.

• Suggested fix: The useTraceTelemetry hook needs to accept location as a parameter. Update its options interface, add it to the function signature, and pass it down to useDiscoverQuery. The calling component, samplesTab.tsx, should then pass its location object to the hook.
  _{severity: 0.85, confidence: 1.0}

_{Did we get this right? 👍 / 👎 to inform future reviews.}

[narsaynorath]

Weird, this wasn't caught by my linter earlier.

[cursor]

Bug: Incorrect Dependency in useMemo Hook

The telemetryData useMemo hook's dependency array includes errorsResult.data, but the error count data is accessed via errorsResult.data.data. This means the memoized value won't update when the actual error data changes, leading to stale error counts and an inconsistent data access pattern compared to other queries.

Additional Locations (1)

• static/app/views/explore/metrics/hooks/useTraceTelemetry.tsx#L152-L153