Simple operation gives the max hexadecimal for U32

[tylerriccio33]

Checks

• I have checked that this issue has not already been reported.
• I have confirmed this bug exists on the latest version of Polars.

Reproducible example

      import polars as pl

      pl.DataFrame({"n1": [1], "n2":[0]}).with_columns(pl.all().cast(pl.UInt32)).with_columns(
          diff = pl.col('n2') - pl.col('n1')
      )

Log output

Issue description

This returns 4,294,967,295 as the real_diff.

Expected behavior

The real_diff should be -1

Installed versions

Replace this line with the output of pl.show_versions(). Leave the backticks in place.