on saga mode, wrong execution of undolog

- [ ] I have searched the [issues](https://github.com/seata/seata/issues) of this repository and believe that this is not a duplicate.

### Ⅰ. Issue Description

### Ⅱ. Describe what happened

If there is an exception, please attach the exception trace:

```
Just paste your stack trace here!
```

### Ⅲ. Describe what you expected to happen

### Ⅳ. How to reproduce it (as minimally and precisely as possible)

1. xxx
2. xxx
3. xxx

### Ⅴ. Anything else we need to know?

### Ⅵ. Environment:

- JDK version :
- OS :
- Others:

The issue names no files, tests, entry points, reproduction steps, or expected behavior; start by reviewing the attached image and locating the Saga undo-log execution path. Reproduce the reported behavior and establish the expected-versus-actual execution before determining what completion should require.

Written by the indexing model from the issue text.