src: remove calls to deprecated V8 functions (Int32Value)

Remove all calls to deprecated V8 functions (here: Value::Int32Value)
inside the code.

PR-URL: https://github.com/nodejs/node/pull/22662


Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Minwoo Jung <minwoo@nodesource.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Ujjwal Sharma <usharma1998@gmail.com>