Fix Legal Hold request parsing (#8981)
Fix Legal Hold request parsing (#8981)

AWS S3 doesn't enforce the URL in XMLNS, accordingly, removing the
URL in XMLNS for ObjectLegalHold.

This was found while testing https://github.com/minio/minio-go/pull/1226
harshavardhana/minio,NitishT/minio,harshavardhana/minio,vadmeste/minio,donatello/minio,balamurugana/minio,krisis/minio,harshavardhana/minio,NitishT/minio,krisis/minio,aead/minio,minio/minio,minio/minio,fwessels/minio,fwessels/minio,harshavardhana/minio,balamurugana/minio,harshavardhana/minio,aead/minio,aead/minio,aead/minio,vadmeste/minio,aead/minio,fwessels/minio,harshavardhana/minio,harshavardhana/minio,aead/minio,NitishT/minio,donatello/minio,NitishT/minio,aead/minio,harshavardhana/minio,aead/minio,fwessels/minio