[Bug] window assigns error

### Search before asking

- [X] I searched in the [issues](https://github.com/apache/iotdb/issues) and found nothing similar.

### Version

操作系统：CentOS 7.9
IoTDB：1.1.1

### Describe the bug and provide the minimal reproduce step

window assigns in group by is different in same logic
### execute insert sql
`insert into root.hess.test.AK1407120700022.testdata (timestamp, epv_total, eload_total) VALUES (2592000000,1,1),(5011199999,2,2),(5011200000,3,3),(7689599999,4,4),(7689600000,5,5)`
`insert into root.hess.test.AK1407120700022.testdata (timestamp, epv_total, eload_total) VALUES (2563200000,10,10),(4982399999,20,20),(4982400000,30,30),(7660799999,40,40),(7660800000,50,50)`
### then execute query sql
`select SUM(epv_total) as pv,SUM(eload_total) as load from root.hess.**.AK1407120700022.** group by ([1970-02-28T08:00:00, 1970-05-31), 1mo , 2mo)`
`select SUM(epv_total) as pv,SUM(eload_total) as load from root.hess.**.AK1407120700022.** group by ([1970-02-28T08:00:00, 1970-05-31), 1mo , 1mo)`

### What did you expect to see?

IoTDB> select SUM(epv_total) as pv,SUM(eload_total) as load from root.hess.**.AK1407120700022.** group by ([1970-02-28T08:00:00, 1970-05-31), 1mo , 2mo)
+-----------------------------+----+----+
| Time| pv|load|
+-----------------------------+----+----+
|1970-02-28T08:00:00.000+08:00|97.0|97.0|
|1970-04-30T08:00:00.000+08:00|null|null|
+-----------------------------+----+----+
Total line number = 2
It costs 0.025s
IoTDB> select SUM(epv_total) as pv,SUM(eload_total) as load from root.hess.**.AK1407120700022.** group by ([1970-02-28T08:00:00, 1970-05-31), 1mo , 1mo)
+-----------------------------+----+----+
| Time| pv|load|
+-----------------------------+----+----+
|1970-02-28T08:00:00.000+08:00|97.0|97.0|
|1970-03-31T08:00:00.000+08:00| 5.0| 5.0|
|1970-04-30T08:00:00.000+08:00|null|null|
+-----------------------------+----+----+
Total line number = 3

### What did you see instead?


### Anything else?

_No response_

### Are you willing to submit a PR?

- [X] I'm willing to submit a PR!

Exécutez les deux requêtes GROUP BY fournies sur IoTDB 1.1.1 après avoir inséré les lignes indiquées, puis comparez les résultats 1mo, 2mo et 1mo, 1mo. Suivez le comportement d’affectation des fenêtres dans le moteur de requêtes ; le travail est terminé lorsqu’une logique de fenêtres équivalente produit des affectations d’intervalles cohérentes et que les requêtes de reproduction renvoient les lignes attendues.

Rédigé par le modèle d'indexation à partir du texte de l'issue.