io/fs, path/filepath, cmd/gofmt: replace statDirEntry with fs.FileInfoToDirEntry

io/fs, path/filepath, cmd/gofmt: replace statDirEntry with fs.FileInfoToDirEntry

Change-Id: Ie914367314ca72fab34c4d4529755dea853cf325
GitHub-Last-Rev: bc61665d33d7f15da371dcfb90c132fab25fc233
GitHub-Pull-Request: golang/go#62342
Reviewed-on: https://go-review.googlesource.com/c/go/+/523876
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: qiulaidongfeng <2645477756@qq.com>
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Commit-Queue: Ian Lance Taylor <iant@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Heschi Kreinick <heschi@google.com>
Reviewed-by: Daniel Martí <mvdan@mvdan.cc>