scaling steps should warn if NaN is returned

[EmilHvitfeldt]

Max Approved

library(recipes)

recipe(mpg ~ ., data = mtcars) |>
  step_log(vs) |>
  step_scale(all_predictors()) |>
  prep() |>
  bake(new_data = NULL)
#> # A tibble: 32 × 11
#>      cyl  disp    hp  drat    wt  qsec    vs    am  gear  carb   mpg
#>    <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl>
#>  1  3.36 1.29  1.60   7.29  2.68  9.21   NaN  2.00  5.42 2.48   21  
#>  2  3.36 1.29  1.60   7.29  2.94  9.52   NaN  2.00  5.42 2.48   21  
#>  3  2.24 0.871 1.36   7.20  2.37 10.4    NaN  2.00  5.42 0.619  22.8
#>  4  3.36 2.08  1.60   5.76  3.29 10.9    NaN  0     4.07 0.619  21.4
#>  5  4.48 2.90  2.55   5.89  3.52  9.52   NaN  0     4.07 1.24   18.7
#>  6  3.36 1.82  1.53   5.16  3.54 11.3    NaN  0     4.07 0.619  18.1
#>  7  4.48 2.90  3.57   6.00  3.65  8.86   NaN  0     4.07 2.48   14.3
#>  8  2.24 1.18  0.904  6.90  3.26 11.2    NaN  0     5.42 1.24   24.4
#>  9  2.24 1.14  1.39   7.33  3.22 12.8    NaN  0     5.42 1.24   22.8
#> 10  3.36 1.35  1.79   7.33  3.52 10.2    NaN  0     5.42 2.48   19.2
#> # ℹ 22 more rows

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