Restore Color class semantics for derived type equality - #36076

src/Graphics/src/Graphics/Platforms/iOS/UIImageExtensions.cs(62,4): error CA1416: (NETCORE_ENGINEERING_TELEMETRY=Build) This call site is reachable on: 'iOS' 13.0 and later, 'maccatalyst' 13.0 and later. 'UIGraphics.EndImageContext()' is unsupported on: 'ios' 17.0 and later, 'maccatalyst' 17.0 and later. (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1416)

src/Graphics/src/Graphics/Platforms/iOS/UIImageExtensions.cs(59,4): error CA1416: (NETCORE_ENGINEERING_TELEMETRY=Build) This call site is reachable on: 'iOS' 13.0 and later, 'maccatalyst' 13.0 and later. 'UIGraphics.BeginImageContext(CGSize)' is unsupported on: 'ios' 17.0 and later, 'maccatalyst' 17.0 and later. (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1416)

src/Graphics/src/Graphics/Platforms/iOS/UIImageExtensions.cs(61,16): error CA1416: (NETCORE_ENGINEERING_TELEMETRY=Build) This call site is reachable on: 'iOS' 13.0 and later, 'maccatalyst' 13.0 and later. 'UIGraphics.GetImageFromCurrentImageContext()' is unsupported on: 'ios' 17.0 and later, 'maccatalyst' 17.0 and later. (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1416)

src/Graphics/src/Graphics/Platforms/iOS/UIImageExtensions.cs(62,4): error CA1416: (NETCORE_ENGINEERING_TELEMETRY=Build) This call site is reachable on: 'iOS' 13.0 and later, 'maccatalyst' 13.0 and later. 'UIGraphics.EndImageContext()' is unsupported on: 'ios' 17.0 and later, 'maccatalyst' 17.0 and later. (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1416)

src/Graphics/src/Graphics/Platforms/iOS/UIImageExtensions.cs(59,4): error CA1416: (NETCORE_ENGINEERING_TELEMETRY=Build) This call site is reachable on: 'iOS' 13.0 and later, 'maccatalyst' 13.0 and later. 'UIGraphics.BeginImageContext(CGSize)' is unsupported on: 'ios' 17.0 and later, 'maccatalyst' 17.0 and later. (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1416)