* Add webp decoder option BackgroundColorHandling to decide howto handle the background color in the ANIM chunk
* Add test for Issue 2528
* Update src/ImageSharp/Formats/Webp/BackgroundColorHandling.cs
Co-authored-by: James Jackson-South <james_south@hotmail.com>
* Fix path to test file
* Another attempt fixing the file path: path should be lower case
* Revert fa4febf7
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Co-authored-by: James Jackson-South <james_south@hotmail.com>