fmt_percent doesn't work with `polars-u64-idx`

[lostmygithubaccount]

Prework

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Description

I need to use polars-u64-idx to avoid errors. it doesn't seem like I can use this with great_tables currently if using fmt_percent

Reproducible example

import polars as pl
from great_tables import GT

df = pl.DataFrame({"a": [1, 2]})

GT(df).fmt_percent("a", decimals=2)

error:

PackageNotFoundError: No package metadata was found for polars

Expected result

the above works -- it does with regular polars

Development environment

• Operating System: macOS
• great_tables Version: 0.9.0
• polars-u64-idx 0.20.31

Additional context

Add any other context about the problem here.