Fix SDL window and resource destruction calls

[Happypig375]

Split from #1392

• Window resizes may cause asynchronous window animations where window syncing is needed.
• Setting window position may change window pixel density because it may be contained in a new display monitor.
• Calling SDL's window setters should always divide by pixel density but currently set position multiples it instead.

[bryanedds]

"Calling SDL's window setters should always divide by pixel density but currently set position multiples it instead."

I don't think it does? -

    let internal trySetWindowSize (size : Vector2i) state =
        match Option.flatten (Option.map SdlDeps.getWindowOpt state.SdlDepsOpt) with
        | Some window ->
            let pixelDensity = SDL3.SDL_GetWindowPixelDensity window
            SDL3.SDL_SetWindowSize (window, int (single size.X / pixelDensity), int (single size.Y / pixelDensity)) |> ignore
        | None -> ()

[Happypig375]

@bryanedds You're looking at "set window size" not "set window position".

[bryanedds]

Ah I see. I'll apply the trySetWindowPosition fix manually for now then come back to this PR when I have time to review it properly.