fix(ext/node): fix BadResource error in FileHandle.readLines() (#32685)

## Summary

- Fixes #32678
- `FileHandle.createReadStream()` now passes the FileHandle object (not
numeric fd) to ReadStream/WriteStream, matching Node.js behavior
- Added `FileHandleOperations` wrapper in `importFd()` that bridges
FileHandle's promise-based methods to the callback-based stream
internals, enabling proper lifecycle coordination via ref-counting

Co-authored-by: Claude Opus 4.6 <[email protected]>