sst_importer: enable the hard link check on all Unix systems (#7591)
sst_importer: enable the hard link check on all Unix systems (#7591)

Signed-off-by: kennytm <d10ee62456d8e2be8715605d23b69b7662d1915a@gmail.com>
BusyJay/tikv,BusyJay/tikv,BusyJay/tikv,c4pt0r/tikv,BusyJay/tikv,pingcap/tikv,pingcap/tikv