fix: multiple fixes in prefix exclude implementation (#14877)

- do not need to restrict prefix exclusions that do not
  have `/` as suffix, relax this requirement as spark may
  have staging folders with other autogenerated characters
  , so we are better off doing full prefix March and skip. 

- multiple delete objects was incorrectly creating a
  null delete marker on a versioned bucket instead of
  creating a proper versioned delete marker.

- do not suspend paths on the excluded prefixes during
  delete operations to avoid creating `null` delete markers,
  honor suspension of versioning only at bucket level for
  delete markers.

cmd/object-api-options.go

@@ -166,7 +166,7 @@ func delOpts(ctx context.Context, r *http.Request, bucket, object string) (opts
 		return opts, err
 	}
 	opts.Versioned = globalBucketVersioningSys.PrefixEnabled(bucket, object)
-	opts.VersionSuspended = globalBucketVersioningSys.PrefixSuspended(bucket, object)
+	opts.VersionSuspended = globalBucketVersioningSys.Suspended(bucket)
 	delMarker := strings.TrimSpace(r.Header.Get(xhttp.MinIOSourceDeleteMarker))
 	if delMarker != "" {
 		switch delMarker {