sched: increase the resource grid history grid size

Author: frankist

lib/scheduler/cell/resource_grid.h

@@ -236,7 +236,7 @@ struct cell_resource_allocator {
   /// \brief Number of previous slot results to keep in history before they get deleted.
   ///
   /// Having access to past decisions is useful during the handling of error indications.
-  static const size_t RING_MAX_HISTORY_SIZE = 4;
+  static const size_t RING_MAX_HISTORY_SIZE = 8;
   /// Number of slots managed by this container.
   static const size_t RING_ALLOCATOR_SIZE =
       get_allocator_ring_size_gt_min(RING_MAX_HISTORY_SIZE + SCHEDULER_MAX_K0 + NTN_CELL_SPECIFIC_KOFFSET_MAX +