split huge tests file (#3629)

Author: ivanmorozov333

.github/config/muted_ya.txt

@@ -6,10 +6,10 @@ ydb/core/client/ut TFlatTest.AutoSplitMergeQueue
 ydb/core/cms/ut_sentinel TSentinelTests.BSControllerCantChangeStatus
 ydb/core/quoter/ut QuoterWithKesusTest.PrefetchCoefficient
 ydb/core/kqp/provider/ut KikimrIcGateway.TestLoadBasicSecretValueFromExternalDataSourceMetadata
-ydb/core/kqp/ut/olap KqpOlap.IndexesActualization
-ydb/core/kqp/ut/olap KqpOlap.BlobsSharing*
+ydb/core/kqp/ut/olap KqpOlapIndexes.IndexesActualization
+ydb/core/kqp/ut/olap KqpOlapBlobsSharing.*
 ydb/core/kqp/ut/olap KqpOlap.ScanQueryOltpAndOlap
-ydb/core/kqp/ut/olap KqpOlap.StatsUsageWithTTL
+ydb/core/kqp/ut/olap KqpOlapStatistics.StatsUsageWithTTL
 ydb/core/kqp/ut/olap KqpOlap.YqlScriptOltpAndOlap
 ydb/core/kqp/ut/pg KqpPg.CreateIndex
 ydb/core/kqp/ut/query KqpLimits.QueryReplySize