solely use notifications store for error message without rowId

packages/frontend-core/src/components/grid/stores/rows.js

@@ -245,16 +245,7 @@ export const deriveStores = context => {
         focusedCellId.set(`${rowId}-${erroredColumns[0]}`)
       }
     } else {
-      // Some other error - just update the current cell
-      if (get(focusedCellId)) {
-        validation.actions.setError(
-          get(focusedCellId),
-          error?.message || "Error"
-        )
-      } else {
-        get(notifications).error(error?.message || "An unknown error occurred")
-      }
-      validation.actions.setError(get(focusedCellId), error?.message || "Error")
+      get(notifications).error(error?.message || "An unknown error occurred")
     }
   }