suggestion: Force rownum (Oracle dialect) to be a number with the function to_number()

[S200124]

Knex version: 3.1.0
Database + version: Oracle 19c EE
OS: Red Hat Enterprise Linux Server 7.9

Suggestion/improvement to cover Oracle bug (?)

When building a query using the limit() function, in Oracle it is translate to the clause "where rownum <= ?" (which is correct). But sometimes, inconsistently and for unknown reasons, Oracle raises the error "ORA-01722: invalid number".
This can be solved forcing rownum to be a number -> "where to_number(rownum) <= ?"

Error message:
Error: select * from (select "COL1", "COL2", "COL3", "COL4", "COL5", "COL6" from "TABLE" order by "COL3" ASC) where rownum <= :1 - ORA-01722: invalid number

This is not a Knex bug, and for what I can see, it is not a consistent error in Oracle. I use the same limit() function with the same setup on other tables/query, and it works without problem. However, changing "where rownum <= ?" to "where to_number(rownum) <= ?" should cover all cases, also the special ones.

@atiertant