Reset internal nonce counter on checkpoint error

[codecov[bot]]

Codecov Report

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

Project coverage is 81.58%. Comparing base (2d6fe7e) to head (1d8fdb8).

:exclamation: Current head 1d8fdb8 differs from pull request most recent head 7889501

Please upload reports for the commit 7889501 to get more accurate results.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #1591 +/- ## ========================================== - Coverage 81.64% 81.58% -0.07% ========================================== Files 98 98 Lines 7302 7302 ========================================== - Hits 5962 5957 -5 - Misses 1340 1345 +5 ``` | [Flag](https://app.codecov.io/gh/delvtech/agent0/pull/1591/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=delvtech) | Coverage Δ | | |---|---|---| | [unittests](https://app.codecov.io/gh/delvtech/agent0/pull/1591/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=delvtech) | `81.58% <ø> (-0.07%)` | :arrow_down: | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=delvtech#carryforward-flags-in-the-pull-request-comment) to find out more.

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