Drop slow test tag

[codecov[bot]]

Codecov Report

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

Project coverage is 61.22%. Comparing base (c4eb380) to head (d8ef985). Report is 1 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #5391 +/- ## ========================================== - Coverage 61.24% 61.22% -0.02% ========================================== Files 310 310 Lines 11061 11061 Branches 755 755 ========================================== - Hits 6774 6772 -2 - Misses 4287 4289 +2 ```

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