Only use CETCOMPAT on x86/x64 platforms

Fixes https://github.com/libsdl-org/SDL/issues/6173

CMakeLists.txt

@@ -692,7 +692,7 @@ if(MSVC)
   target_compile_definitions(sdl-build-options INTERFACE "-D_CRT_SECURE_NO_WARNINGS")
 
   # CET support was added in VS 16.7
-  if(MSVC_VERSION GREATER 1926 AND NOT CMAKE_GENERATOR_PLATFORM MATCHES ARM)
+  if(MSVC_VERSION GREATER 1926 AND CMAKE_GENERATOR_PLATFORM MATCHES "Win32|x64")
     list(APPEND EXTRA_LDFLAGS_BUILD "-CETCOMPAT")
   endif()
 endif()