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-handlers-common.go

@@ -275,8 +275,8 @@ func deleteObjectVersions(ctx context.Context, o ObjectLayer, bucket string, toD
 		}
 		vc, _ := globalBucketVersioningSys.Get(bucket)
 		deletedObjs, errs := o.DeleteObjects(ctx, bucket, toDel, ObjectOptions{
-			PrefixEnabledFn:   vc.PrefixEnabled,
-			PrefixSuspendedFn: vc.PrefixSuspended,
+			PrefixEnabledFn:  vc.PrefixEnabled,
+			VersionSuspended: vc.Suspended(),
 		})
 		var logged bool
 		for i, err := range errs {