[nodejs] upgrade N-API version to 6 (#24443)
### Description
Update N-API version to 6.
- NAPI v6 is required for `napi_set_instance_data` and
`napi_get_instance_data`, as used by #24366
- Adding the "binary" field in package.json for CMake-js to work
correctly. (was unintentially removed in #24418)
### Motivation and Context
<!-- - Why is this change required? What problem does it solve?
- If it fixes an open issue, please link to the issue here. -->
