[Chassis][Voq][Qos]qos_yaml updated for 400G (sonic-net#14802)

Fixing intermittent failure in lossy queue by adjusting the pkts_num_trig_egr_drp for 'broadcom-dnx' t2 chassis.
Updation on the original PR # sonic-net#14585

Summary:
Fixes # (issue)

Type of change
 Bug fix
 Testbed and Framework(new/improvement)
 Test case(new/improvement)
Back port request
 202012
 202205
 202305
 202311
 202405
Approach
What is the motivation for this PR?
How did you do it?
Since the pkts_num_leakout is more for 100G.Adjusting the count of pkt sent to trigger egress drop.

How did you verify/test it?
Executed the qos test and verify.

tests/qos/files/qos_params.j2c.yaml

@@ -481,7 +481,7 @@ qos_params:
                     dscp: 8
                     ecn: 1
                     pg: 0
-                    pkts_num_trig_egr_drp: 2179900
+                    pkts_num_trig_egr_drp: 2179770
                     pkts_num_margin: 100
                 wm_pg_shared_lossless:
                     dscp: 3
@@ -497,7 +497,7 @@ qos_params:
                     ecn: 1
                     pg: 0
                     pkts_num_fill_min: 0
-                    pkts_num_trig_egr_drp: 2179900
+                    pkts_num_trig_egr_drp: 2179770
                     packet_size: 64
                     cell_size: 4096
                     pkts_num_margin: 40
@@ -523,7 +523,7 @@ qos_params:
                     ecn: 1
                     queue: 0
                     pkts_num_fill_min: 0
-                    pkts_num_trig_egr_drp: 2179900
+                    pkts_num_trig_egr_drp: 2179770
                     cell_size: 4096
                 wm_buf_pool_lossy:
                     dscp: 8