Add test case for pxr24 compressed image

tests/ImageSharp.Tests/Formats/Exr/ExrDecoderTests.cs

@@ -119,6 +119,16 @@ public class ExrDecoderTests
         image.CompareToOriginal(provider, ImageComparer.Exact, ReferenceDecoder);
     }
 
+    [Theory]
+    [WithFile(TestImages.Exr.Pxr24Half, PixelTypes.Rgba32)]
+    public void ExrDecoder_CanDecode_Pxr24Compressed<TPixel>(TestImageProvider<TPixel> provider)
+        where TPixel : unmanaged, IPixel<TPixel>
+    {
+        using Image<TPixel> image = provider.GetImage(ExrDecoder.Instance);
+        image.DebugSave(provider);
+        image.CompareToOriginal(provider, ImageComparer.Exact, ReferenceDecoder);
+    }
+
     [Theory]
     [WithFile(TestImages.Exr.B44, PixelTypes.Rgba32)]
     public void ExrDecoder_CanDecode_B44Compressed<TPixel>(TestImageProvider<TPixel> provider)

tests/ImageSharp.Tests/TestImages.cs

@@ -1395,6 +1395,7 @@ public static class TestImages
         public const string Zips = "Exr/Calliphora_zips.exr";
         public const string Rle = "Exr/Calliphora_rle.exr";
         public const string B44 = "Exr/Calliphora_b44.exr";
+        public const string Pxr24Half = "Exr/Calliphora_half_pxr24.exr";
         public const string Rgb = "Exr/Calliphora_rgb.exr";
         public const string Gray = "Exr/Calliphora_gray.exr";
     }

tests/Images/Input/Exr/Calliphora_half_pxr24.exr

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:927778a73832b5ad68473e46df6be52076d98294271f2cd0ead66691db41b7bf
+size 195063