src: remove calls to deprecated V8 functions (Equals)

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

PR-URL: https://github.com/nodejs/node/pull/22665


Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Daniel Bevenius <daniel.bevenius@gmail.com>
Reviewed-By: Ujjwal Sharma <usharma1998@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>