[BUG] Degree Fusion occurs bug in Insight Runtime

**Describe the bug**

As titled.

When executing the following query on LDBC 100, applying `DegreeFusionRule` or not generates two different results, which is not as expected:

With `DegreeFusionRule`:
```
@neo4j> Match (tag:TAG)<-[:HASTAG]-(message:POST|COMMENT)
Where tag.name = "North_German_Confederation"
WITH DISTINCT message
MATCH (message)<-[:LIKES]-(liker:PERSON)
WITH message, count(liker) as likeCount
Return count(message);
+-------+
| $f0 |
+-------+
| 70482 |
+-------+
```

Without `DegreeFusionRule`:
```
@neo4j> Match (tag:TAG)<-[:HASTAG]-(message:POST|COMMENT)
Where tag.name = "North_German_Confederation"
WITH DISTINCT message
MATCH (message)<-[:LIKES]-(liker:PERSON)
WITH message, count(liker) as likeCount
Return count(message);

+------+
| $f0 |
+------+
| 6528 |
+------+
```