Update platform support

Something that bothers me is the supported platforms advertised on the website.

Windows Universal - Deprecated AFAIK which means no Xbox and hasnt worked properly since 4.0 and maybe 4.1
IOS/Android - I am not confident on IOS compatability and Android seems to have constant issues.
Linux - should probably be listed as experimental or list limitations at least(This has gotten a lot better with Jkaos work but still the graphics APIs seem to be fairly early/ unfinished)
MacOS - This likely hasn't worked since before the M1 chips have existed AFAICT

I know one of the issues is that people have not been around to confirm these still work but ever since the September boom there have been many findings posted in Discord and the Stride issues/discussions on problems found in 4.1+.

I would love to get some feedback on this as maybe some of these projects just need some updated docs or something but either way the average user will just get frustrated as they use Stride and find out things just do not work at all.

Linux limitations

I know about are primarily with shaders. Vulkan and OpenGL only work with Vertex and Pixel shaders and Jkao canprobably speak on some other errors.

SDL fullscreen does not work currently and maybe other issues not found?

IOS limitations

TBD? this may just not work at all from what I have seen in discord

Android limitations

Rendering API needs to be documented as to what works with mobile.
https://github.com/stride3d/stride/discussions/2239
https://github.com/stride3d/stride/discussions/1657
Other?

MacOS limitations

TBD? this may just not work at all with the current systems in place

The issue does not name a file or test; start by locating the website content that advertises platform support and review the linked Android discussions. Confirm the current status and limitations for Linux, iOS, Android, macOS, and Windows, then update the support information so advertised capabilities match the confirmed findings.