* Fix duplicated trimming attributes warning in Markup.Xaml.Loader
* Fix nullability warnings
* Update ImageSharp to 2.1.8
* Removed obsolete attributes on ValueStore
* Ignore CA1815 on private API RenderTargetProperties
* Fix switch expression warnings
* Fix warnings in Vulkan project
* Only include PThread for WasmEnableThreads
* Rename pollfd to PollFd to fix CS8981
* Fix incompatible packages being used in ControlCatalog.Desktop
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Co-authored-by: Max Katz <maxkatz6@outlook.com>