test: fix compiler warnings in callback-scope

Currently there are two compiler warnings generated from the addons test
callback-scope:

../binding.cc:44:10:
warning: 'Resolve' is deprecated [-Wdeprecated-declarations]
  local->Resolve(v8::Undefined(isolate));
         ^
../../../../deps/v8/include/v8.h:3893:45:
note: 'Resolve' has been explicitly marked deprecated here
V8_DEPRECATED("Use maybe version", void Resolve(Local<Value> value));
         ^

../binding.cc:52:54:
warning: 'New' is deprecated [-Wdeprecated-declarations]
    persistent.Reset(isolate, v8::Promise::Resolver::New(isolate));
                                                     ^
../../../../deps/v8/include/v8.h:3880:42:
note: 'New' has been explicitly marked deprecated here
Local<Resolver> New(Isolate* isolate));

This commit updates the test to use non-deprecated functions.

PR-URL: https://github.com/nodejs/node/pull/19252


Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Franziska Hinkelmann <franziska.hinkelmann@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>