Update built in SDL version for windows to 2.32.4

[taysta]

• Built with Visual Studio 2022 with PlatformToolSet v141_xp.
• x64 built with TargetName SDL2.x86_64 / SDL264main to use SDL2.x86_64.dll.

from JACoders#1238:

• Make r_sdlDriver settable at startup to choose which SDL backend is used "wayland" for example.
• Add r_allowScreensaver cvar to allow enabling screen to sleep while game is running.
• Turn on hint to bring back pre-SDL 2.0.14 behavior for alt-tab on focus loss.
• Add s_sdlDriver to choose which backend is used for SDL audio ("pulseaudio" or "pipewire" for example)
• Silence Apple OpenGL deprecated warnings