[release-branch.go1.21] Revert "os: use handle based APIs to read directories on...

[release-branch.go1.21] Revert "os: use handle based APIs to read directories on windows"

This reverts CL 452995.

Reason for revert: caused os.File.ReadDir to fail on
filesystems that do not support FILE_ID_BOTH_DIR_INFO.

This is an alternative to a fix-forward change in CL 518196.
Since the original change was mostly a performance improvement,
reverting to the previous implementation seems less risky than
backporting a larger fix.

Fixes #61910
Fixes #61964

Change-Id: I60f1602b9eb6ea353e7eb23429f19f1ffa16b394
Reviewed-on: https://go-review.googlesource.com/c/go/+/520156
Run-TryBot: Bryan Mills <bcmills@google.com>
Reviewed-by: Austin Clements <austin@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Quim Muntal <quimmuntal@gmail.com>