* make node:fs/promises.open return a FileHandle and expose fdatasync
* node_fs: add fn spacing
* fix this assert usage too
* move primordial preservation higher
* use expect().toBe() instead of assert
* ensure top level node:fs/promises functions always receive fd's as a number
* add needed fixture
* [autofix.ci] apply automated fixes
* this was the wrong fix for a different thing
will look into it later
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Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>
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