syscall: js/wasm file operations fail on windows / node.js [1.24 backport]

[gopherbot]

@dmitshur requested issue #71758 to be considered for backport to the next 1.24 minor release.

@gopherbot Please add this issue for us to consider for backport to 1.24.

I can be convinced otherwise, but not sure if this meets the bar: the experimental js/wasm port is intended to run in browsers, and uses Node only for testing. This breaks testing support on a Windows host. On the other hand, the backport is very safe and there's no workaround for the affected environment other than modifying the files manually.

[gopherbot]

Change https://go.dev/cl/652835 mentions this issue: [release-branch.go1.24] syscall: disable O_DIRECTORY on Windows for js/wasm

[gopherbot]

Closed by merging CL 652835 (commit 4070531) to release-branch.go1.24.