Changes

Fix building tiflash-sanitizer (#3019)

### **User description**
Fix that git considers the directory as not safe, making tiflash
sanitizer failed to build



https://ci.pingcap.net/blue/organizations/jenkins/tiflash-sanitizer-daily/detail/tiflash-sanitizer-daily/1987/pipeline/
```
[2024-07-01T18:48:01.172Z] fatal: detected dubious ownership in repository at '/home/jenkins/agent/workspace/tiflash-sanitizer-daily/tiflash'
[2024-07-01T18:48:01.172Z] To add an exception for this directory, call:
[2024-07-01T18:48:01.172Z] 
[2024-07-01T18:48:01.172Z] 	git config --global --add safe.directory /home/jenkins/agent/workspace/tiflash-sanitizer-daily/tiflash
```

ref https://github.com/pingcap/tiflash/issues/7193

___

### **PR Type**
Bug fix, Configuration changes


___

### **Description**
- Added commands to configure Git safe directories to avoid build
failures due to dubious ownership detection.
- Ensured the directories `${curws}/tiflash/contrib/tiflash-proxy` and
`${curws}/tiflash` are marked as safe.



___



### **Changes walkthrough** 📝
<table><thead><tr><th></th><th align="left">Relevant
files</th></tr></thead><tbody><tr><td><strong>Configuration
changes</strong></td><td><table>
<tr>
  <td>
    <details>

<summary><strong>tiflash-sanitizer-daily.groovy</strong><dd><code>Configure
Git safe directories for tiflash-sanitizer build</code></dd></summary>
<hr>
      
jenkins/pipelines/ci/tiflash/tiflash-sanitizer-daily.groovy

<li>Added commands to configure Git safe directories.<br> <li> Ensured
the directories used in the build process are marked as safe.<br>


</details>
    

  </td>
<td><a
href="https://github.com/PingCAP-QE/ci/pull/3019/files#diff-cf6e0f80b8d57ff16c04804cccb20aa2048f6041c6c159d041d860881b6fb9ae">+5/-0</a>&nbsp;
&nbsp; &nbsp; </td>

</tr>                    
</table></td></tr></tr></tbody></table>

___

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 (commit: 61a4fa1)