fix: improve NewObjectReader implementation for careful cleanup usage (#12199)

cleanup functions should never be cleaned before the reader is
instantiated, this type of design leads to situations where order
of lockers and places for them to use becomes confusing.

Allow WithCleanupFuncs() if the caller wishes to add cleanupFns
to be run upon close() or an error during initialization of the
reader.

Also make sure streams are closed before we unlock the resources,
this allows for ordered cleanup of resources.

cmd/bucket-lifecycle.go

@@ -325,6 +325,7 @@ func getTransitionedObjectReader(ctx context.Context, bucket, object string, rs
 	if err != nil {
 		return nil, fmt.Errorf("transition storage class not configured")
 	}
+
 	fn, off, length, err := NewGetObjectReader(rs, oi, opts)
 	if err != nil {
 		return nil, ErrorRespToObjectError(err, bucket, object)