…filter changes

Adds data fetching for pinned log rows that are in the URL but not yet
loaded in the infinite scroll table (e.g. the virtualizer hasn't reached
them yet). Also removes pinned IDs from the URL when they can't be found
within the current page filters (date range, project, environment).

- Add removePinnedRow to LogsPinning interface (idempotent removal)
- New usePinnedLogsQuery hook: fetches missing pinned log rows via the
  events API, then removes any IDs that aren't returned (invalidation)
- PinnedLogs now accepts fetchedPinnedRows/isFetchingPinnedRows props,
  merges fetched rows with existing allRows, and shows a loading indicator
  while rows are being fetched
- logsInfiniteTable calls usePinnedLogsQuery and passes results down

Refs LOGS-781
Co-Authored-By: Claude Sonnet 4 <noreply@anthropic.com>

Replace removePinnedRow with removePinnedRows so invalidation removes all
not-yet-available pinned ids in a single state update. Calling the
single-id setter in a loop dropped removals: nuqs runs setState updaters
at render, so each synchronous call saw the same committed state and only
the last write survived.

Include the utc flag in the pinned-log fetch for absolute date ranges so
it matches the main logs query's time window and avoids spurious pin
invalidation.

Also fix pre-existing typecheck failures (LogFixture missing
ORGANIZATION_ID, PinnedLogs wrapper row type) and a require-await lint
error in the specs.

Refs LOGS-781
Co-Authored-By: Claude <noreply@anthropic.com>