ImageInfo.FrameMetadataCollection not populated correctly for animated png images

[andreas-eriksson]

Prerequisites

• I have written a descriptive issue title
• I have verified that I am running the latest version of ImageSharp
• I have verified if the problem exist in both DEBUG and RELEASE mode
• I have searched open and closed issues to ensure it has not already been reported

ImageSharp version

3.1.12

Other ImageSharp packages and versions

None

Environment (Operating system, version and so on)

Windows

.NET Framework version

8

Description

ImageInfo.FrameMetadataCollection is not populated correctly when running Identify.

Steps to Reproduce

public void Identify_AnimatedPng_ReadsFrameCountCorrectly()
{
    TestFile testFile = TestFile.Create(TestImages.Png.AnimatedFrameCount);

    using MemoryStream stream = new(testFile.Bytes, false);
    ImageInfo imageInfo = Image.Identify(stream);

    Assert.NotNull(imageInfo);
    Assert.Equal(50, imageInfo.FrameMetadataCollection.Count);
}

Images

No response

[andreas-eriksson]

#3101