unexpected jsonTable version after DumpHistoricalStatsBySnapshot

## Bug Report

Please answer these questions before submitting your issue. Thanks!

### 1. Minimal reproduce step (Required)

Enable the failpoint and run this test.
```
func TestAssertHistoricalStatsAfterAlterTable(t *testing.T) {
failpoint.Enable("github.com/pingcap/tidb/pkg/domain/sendHistoricalStats", "return(true)")
defer failpoint.Disable("github.com/pingcap/tidb/pkg/domain/sendHistoricalStats")
store, dom := testkit.CreateMockStoreAndDomain(t)
tk := testkit.NewTestKit(t, store)
tk.MustExec("set global tidb_enable_historical_stats = 1")
tk.MustExec("use test")
tk.MustExec("drop table if exists t")
tk.MustExec("create table t(a int, b varchar(10),c int, KEY `idx` (`c`))")
tk.MustExec("analyze table test.t")
is := dom.InfoSchema()
tableInfo, err := is.TableByName(context.Background(), model.NewCIStr("test"), model.NewCIStr("t"))
require.NoError(t, err)
// dump historical stats
h := dom.StatsHandle()
hsWorker := dom.GetHistoricalStatsWorker()
tblID := hsWorker.GetOneHistoricalStatsTable()
err = hsWorker.DumpHistoricalStats(tblID, h)
require.Nil(t, err)

time.Sleep(1 * time.Second)
snapshot := oracle.GoTimeToTS(time.Now())
jsTable, _, err := h.DumpHistoricalStatsBySnapshot("test", tableInfo.Meta(), snapshot)
require.NoError(t, err)
require.NotNil(t, jsTable)
require.NotEqual(t, jsTable.Version, uint64(0))
}
```

change the ```create table``` statment as

```
create table t(a int, b varchar(10),c int, KEY `idx` (`c`)) partition by hash (a) partitions 16
```

### 2. What did you expect to see? (Required)
Test passes.

### 3. What did you see instead (Required)
```
require.NotEqual(t, jsTable.Version, uint64(0))
```
failed.

### 4. What is your TiDB version? (Required)
master