fix: repeat append value

[simlecode]

关联的Issues (Related Issues)

fix https://github.com/filecoin-project/venus/pull/6209/files#diff-dfa1ccfb1f0770b3c6b568d58b8a287adcb2cec98efb0fe72e525fe33e5129f0L717

改动 (Proposed Changes)

附注 (Additional Info)

自查清单 (Checklist)

在你认为本 PR 满足被审阅的标准之前，需要确保 / Before you mark the PR ready for review, please make sure that:

• 符合Venus项目管理规范中关于PR的相关标准 / The PR follows the PR standards set out in the Venus project management guidelines
• 具有清晰明确的commit message / All commits have a clear commit message.
• 包含相关的的测试用例或者不需要新增测试用例 / This PR has tests for new functionality or change in behaviour or not need to add new tests.
• 存在兼容性问题（接口, 配置，数据，灰度），如果存在需要进行文档说明 / This PR has compatibility issues (API, Configuration, Data, GrayRelease), if so, need to be documented.
• 包含相关的的指南以及文档或者不需要新增文档 / This PR has updated usage guidelines and documentation or not need
• 通过必要的检查项 / All checks are green

[codecov-commenter]

Codecov Report

Merging #6210 (bc969f0) into release/v1.14 (daca0eb) will increase coverage by 0%.
Report is 1 commits behind head on release/v1.14.
The diff coverage is 0%.

Additional details and impacted files

@@              Coverage Diff              @@
##           release/v1.14   #6210   +/-   ##
=============================================
  Coverage             23%     24%           
=============================================
  Files                679     679           
  Lines              84189   84190    +1     
=============================================
+ Hits               20202   20210    +8     
+ Misses             61320   61315    -5     
+ Partials            2667    2665    -2     

[LinZexiao]

LGTM