fix bug in GNB MAC nr_store_dlsch_buffer() to handle multipe UEs correctly.
This MR fixes a bug in GNB MAC nr_store_dlsch_buffer() to handle multipe UEs correctly and increases the number of UE from 2 to 4.
This MR fixes a bug in GNB MAC nr_store_dlsch_buffer() to handle multipe UEs correctly and increases the number of UE from 2 to 4.