fix: fix float in dynamic Document creation

[codecov[bot]]

Codecov Report

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

Project coverage is 84.69%. Comparing base (f71a5e6) to head (7730bbf).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #1877 +/- ## ======================================= Coverage 84.68% 84.69% ======================================= Files 136 136 Lines 9261 9263 +2 ======================================= + Hits 7843 7845 +2 Misses 1418 1418 ``` | [Flag](https://app.codecov.io/gh/docarray/docarray/pull/1877/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=docarray) | Coverage Δ | | |---|---|---| | [docarray](https://app.codecov.io/gh/docarray/docarray/pull/1877/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=docarray) | `84.69% <100.00%> (+<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=docarray#carryforward-flags-in-the-pull-request-comment) to find out more.

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