sdl: update to latest sdl2

[shuffle2]

(i'm just updating this arbitrarily as I happen to notice new commits to the SDL2 branch which touch input related code)

maybe related issues (current open SDL bugs):
https://bugs.dolphin-emu.org/issues/13045
https://bugs.dolphin-emu.org/issues/13117
https://bugs.dolphin-emu.org/issues/13125

[iwubcode]

Have we found any documentation that says SDL2 branch is appropriate? Why is it chosen over main or one of the released tags?

[shuffle2]

why not main: main is now active dev of sdl3 and is seeing a lot of api-breaking code churn. sdl2 branch still gets some fixes backported / fixes specifically for version 2.
why not release/tag: sdl is notorious for having a lot of bugs, and we generally just stay at HEAD to get the bugfixes without waiting for releases (dolphin has been doing this with main, previously)

[dvessel]

Just a note in case anyone else runs into this. Launching through the command line with —batch will cause a EXC_BAD_ACCESS (SIGSEGV) error when quitting. This is on MacOS Ventura. I had to go back to the brew install of sdl2 to prevent it.

It also changes the controller name on the DualSense controller so it has to be updated in your controller/hotkeys settings.

[shuffle2]

Please report SDL bugs to SDL :)