[Bug] Fast kmerf test stat when using classification forests

[sampan501]

Reference issue

Type of change

What does this implement/fix?

Additional information

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[codecov[bot]]

Codecov Report

Patch coverage: 100.00% and project coverage change: -0.01 :warning:

Comparison is base (c59c27d) 96.70% compared to head (dae0d3a) 96.70%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #379 +/- ## ========================================== - Coverage 96.70% 96.70% -0.01% ========================================== Files 86 86 Lines 3889 3886 -3 ========================================== - Hits 3761 3758 -3 Misses 128 128 ``` | [Impacted Files](https://app.codecov.io/gh/neurodata/hyppo/pull/379?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=neurodata) | Coverage Δ | | |---|---|---| | [hyppo/independence/kmerf.py](https://app.codecov.io/gh/neurodata/hyppo/pull/379?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=neurodata#diff-aHlwcG8vaW5kZXBlbmRlbmNlL2ttZXJmLnB5) | `96.55% <100.00%> (-0.17%)` | :arrow_down: |

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