Fix TDSProxyPutTest::TestBlock42PutStatusOkWith_1_1_VdiskErrors (#28645)

Author: serbel324

.github/config/muted_ya.txt

@@ -1,4 +1,3 @@
-ydb/core/blobstorage/dsproxy/ut TDSProxyPutTest.TestBlock42PutStatusOkWith_1_1_VdiskErrors
 ydb/core/blobstorage/pdisk/ut RDMA.ChunkWriteDifferentOffsetAndSize
 ydb/core/blobstorage/ut_blobstorage BlobPatching.PatchBlock42
 ydb/core/blobstorage/ut_blobstorage CountingEvents.Collect_Mirror3of4

ydb/core/blobstorage/dsproxy/ut/dsproxy_env_mock_ut.h

@@ -147,6 +147,10 @@ struct TDSProxyEnv {
                     .TimeStatsEnabled = Mon->TimeStats.IsEnabled(),
                     .Stats = PerDiskStatsPtr,
                     .EnableRequestMod3x3ForMinLatency = false,
+                    .AccelerationParams = {
+                        // disable slow disk logic to avoid inconsistent accelerations
+                        .SlowDiskThreshold = 1'000'000'000,
+                    },
                     .LongRequestThreshold = TDuration::Seconds(1),
                 }));
     }