[macOS] Fix crash when setting window properties#21357

MartyIX wants to merge 3 commits into

dotnet:maindotnet/maui:mainfrom

MartyIX:feature/2024-03-21-macOS-window-setting-width-heigh-crashMartyIX/maui:feature/2024-03-21-macOS-window-setting-width-heigh-crashCopy head branch name to clipboard