FIX: also exclude np.nan in RGB(A) in color mapping #27303
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closes #27301
PR summary
The docstring says "values must be on [0, 1] gamut" as is our standard encoding for float RGB(A) arrays. We check that the min and max are not outside of this range, but due to the way comparisons work with
np.nan
our test erroneously passed.This adds an explict check for
np.nan
PR checklist