*: update unstable unit test case list (pingcap#33784)

ref pingcap#32303

unstable.txt

@@ -1,33 +1,19 @@
 ddl TestModifyColumn
-ddl TestModifyColumnTypeWhenInterception
-util/cpuprofile TestGetCPUProfile
+ddl TestPartition
+ddl TestDuplicateErrorMessage
+ddl TestAddIndexWithSplitTable
+ddl TestAddColumn
 executor TestDefaultValForAnalyze
 executor TestPBMemoryLeak
-executor TestInvalidReadCacheTable
-executor TestCancelMppTasks
 executor testSuite.TestTimestampDefaultValueTimeZone
-executor TestIndexJoin31494
-executor TestInvalidReadCacheTable
 executor TestPartitionTable
-executor TestRangePartitionBoundariesLtM
+executor TestIn
 server TestTopSQLCPUProfile
-server TestErrorNoRollback
-server TestUint64
-planner/core TestIssue27544
-planner/core TestIssue20139
-planner/core TestAggPushToCopForCachedTable
-planner/core TestIssue23887
-planner/core TestOrderedResultModeOnJoin
-planner/core TestCompareSubquery
-planner/core TestEstimation
-planner/core TestPlanStringer
-planner/core TestMultiColInExpression
-planner/core TestIssue16407
-planner/core TestPrepareCacheNow
-planner/core TestDAGPlanBuilderSplitAvg
-planner/core TestIndexMerge
-planner/core TestUnmatchedTableInHint
-planner/core TestCopPaging
-planner/core TestPlanCachePointGetAndTableDual
-planner/core TestSimplifyOuterJoinWithCast 
-executor/seqtest TestShow
+planner/core TestIssue20710
+planner/core TestPartitionWithVariedDataSources
+planner/core TestPlanCacheUnionScan
+planner/core TestIssue32632
+executor TestInvalidReadTemporaryTable
+session testPessimisticSuite.TestAmendForIndexChange
+store/mockstore/unistore/tikv TestDeadlock
+expression TestIssue27831