Fixing a bug where precision was getting lost in event -> db pipeline

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 83.33333% with 6 lines in your changes missing coverage. Please review.

Project coverage is 81.48%. Comparing base (7bb4141) to head (00ec5fe). Report is 78 commits behind head on main.

Files with missing lines	Patch %	Lines
...c/agent0/ethpy/hyperdrive/interface/_event_logs.py	78.94%	4 Missing :warning:
src/agent0/chainsync/db/hyperdrive/convert_data.py	66.66%	2 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #1621 +/- ## ======================================= Coverage 81.47% 81.48% ======================================= Files 98 98 Lines 7282 7290 +8 ======================================= + Hits 5933 5940 +7 - Misses 1349 1350 +1 ``` | [Flag](https://app.codecov.io/gh/delvtech/agent0/pull/1621/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/1621/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=delvtech) | `81.48% <83.33%> (+<0.01%)` | :arrow_up: | 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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