Update muted YA file for stable-25-1

Author: ydbot

.github/config/muted_ya.txt

@@ -61,6 +61,7 @@ ydb/core/tx/schemeshard/ut_login_large TSchemeShardLoginLargeTest.RemoveLogin_Ma
 ydb/core/tx/schemeshard/ut_pq_reboots TPqGroupTestReboots.AlterWithReboots-PQConfigTransactionsAtSchemeShard-false
 ydb/core/tx/schemeshard/ut_pq_reboots TPqGroupTestReboots.AlterWithReboots-PQConfigTransactionsAtSchemeShard-true
 ydb/core/tx/tiering/ut ColumnShardTiers.TTLUsage
+ydb/core/viewer/ut Viewer.TabletMergingPacked
 ydb/library/actors/http/ut sole chunk chunk
 ydb/library/actors/http/ut sole+chunk+chunk
 ydb/library/actors/interconnect/ut_huge_cluster HugeCluster.AllToAll