PostgreSQL case in where clause errror

### Version

5.0.0

### Context

Wile working on Hibernate Reactive I noticed that
using PostgreSQL the query using `client.preparedQuery(sql).execute(parameters)`:
```sql
select f1_0.id,f1_0.age,f1_0.rating,f1_0.title
from Film f1_0
where f1_0.age<=case when (f1_0.rating=$1) then $2 when (f1_0.rating=$3) then $4 else $5 end
order by f1_0.id
```
with parameters `[1,2,3,4,5]`.

It throws:
```
operator does not exist: integer <= text (42883)] [select
f1_0.id,f1_0.age,f1_0.rating,f1_0.title from Film f1_0 where f1_0.age<=case when (f1_0.rating=$1) then $2 when (f1_0.rating=$3) then $4 else $5 end order by f1_0.id]
```

### Steps to reproduce

_No response_

### Do you have a reproducer?

_No response_