sdl12-compat: Map SDL2 SDLK_APPLICATION to SDL12 SDLK_MENU

SDL Commits
1 
From 6664980e293123ca0d61eb5ef9f78ad844adf454 Mon Sep 17 00:00:00 2001
From: Sam Lantinga <[EMAIL REDACTED]>
Date: Tue, 28 Oct 2025 11:13:12 -0700
Subject: [PATCH] Map SDL2 SDLK_APPLICATION to SDL12 SDLK_MENU

Fixes https://github.com/libsdl-org/sdl12-compat/issues/351
---
 src/SDL12_compat.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/SDL12_compat.c b/src/SDL12_compat.c
index fb1d3099e..359ab4ec0 100644
--- a/src/SDL12_compat.c
+++ b/src/SDL12_compat.c
@@ -3764,6 +3764,7 @@ Keysym20to12(const SDL_Keycode keysym20)
     CASEKEYSYM20TO12(RGUI, RMETA);
     CASEKEYSYM20TO12(LGUI, LMETA);
     CASEKEYSYM20TO12(PRINTSCREEN, PRINT);
+    CASEKEYSYM20TO12(APPLICATION, MENU);
     #undef CASEKEYSYM20TO12
 
     #define CASEKEYSYM20TO12(k) case SDLK_##k: return SDLK12_##k