fix: regression in CopyObject not preserving ETag in --compat (#9322)
fix: regression in CopyObject not preserving ETag in --compat (#9322)

issue found after `git bisect` to commit db4195361876fbe2410236bce55f173da3ef3b2b
aead/minio,harshavardhana/minio,balamurugana/minio,harshavardhana/minio,aead/minio,minio/minio,harshavardhana/minio,NitishT/minio,NitishT/minio,aead/minio,harshavardhana/minio,fwessels/minio,aead/minio,harshavardhana/minio,krisis/minio,harshavardhana/minio,donatello/minio,aead/minio,donatello/minio,fwessels/minio,vadmeste/minio,aead/minio,harshavardhana/minio,NitishT/minio,krisis/minio,fwessels/minio,minio/minio,vadmeste/minio,NitishT/minio,aead/minio,fwessels/minio,balamurugana/minio,harshavardhana/minio,aead/minio