local: Ignore additional errors for directory syncing

Apparently SMB/CIFS on Linux/macOS returns somewhat random errnos when
trying to sync a windows share which does not support calling fsync for
a directory.

internal/backend/local/local_unix.go

@@ -19,7 +19,7 @@ func fsyncDir(dir string) error {
 	}
 
 	err = d.Sync()
-	if errors.Is(err, syscall.ENOTSUP) {
+	if errors.Is(err, syscall.ENOTSUP) || errors.Is(err, syscall.ENOENT) || errors.Is(err, syscall.EINVAL) {
 		err = nil
 	}