fixed a bug in model_dump_custom

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 95.74%. Comparing base (a25f38b) to head (8c508fb). Report is 31 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #20 +/- ## ========================================== + Coverage 95.70% 95.74% +0.04% ========================================== Files 26 24 -2 Lines 2095 2069 -26 ========================================== - Hits 2005 1981 -24 + Misses 90 88 -2 ```

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.