fix(tables): "X running" badge counts actual in-flight cells, not dispatch scope

The badge derived from `runningCellCount` (the dispatch-scope estimate =
rows-ahead × groupCount), which over-counts groups that already finished on
rows still inside a dispatch's scope — a cascade where 3 of 4 workflow columns
completed read "4 running" instead of "1". Derive `totalRunning` from the live
`runningByRowId` map instead (the same per-row source the gutter and action-bar
selection already sum), so it reflects cells actually in flight and updates
per-cell via SSE rather than only on dispatch-window events.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: TheodoreSpeaks

apps/sim/app/workspace/[workspaceId]/tables/[tableId]/components/table-grid/table-grid.tsx

@@ -323,8 +323,13 @@ export function TableGrid({
 
   const { data: tableRunState } = useTableRunState(tableId)
   const activeDispatches = tableRunState?.dispatches
-  const totalRunning = tableRunState?.runningCellCount ?? 0
   const runningByRowId = tableRunState?.runningByRowId ?? EMPTY_RUNNING_BY_ROW
+  // Actual in-flight cell count = sum of the live per-row map (kept current by
+  // applyCell's SSE deltas, and the same source the per-row gutter uses). The
+  // dispatch-scope `runningCellCount` over-counts already-completed groups on
+  // rows still inside a dispatch's scope — e.g. a cascade where 3 of 4 columns
+  // finished would read "4 running" instead of "1".
+  const totalRunning = Object.values(runningByRowId).reduce((sum, n) => sum + n, 0)
 
   const tableRowCountRef = useRef(tableData?.rowCount ?? 0)
   tableRowCountRef.current = tableData?.rowCount ?? 0