fix: make sure to delete dangling objects during heal (#13138)

heal with --remove was not removing dangling versions
on versioned buckets, this PR fixes this properly.

this is a regression introduced in PR #12617

internal/config/api/api.go

@@ -84,7 +84,7 @@ var (
 		},
 		config.KV{
 			Key:   apiListQuorum,
-			Value: "optimal",
+			Value: "strict",
 		},
 		config.KV{
 			Key:   apiReplicationWorkers,