[Et tu] Move pipboy GAMEMODECHANGE hook (#595)

This now fires when the window is created, allowing scripts to manipulate it (and in particular, add "X days left" note)

src/pipboy.cc

@@ -501,13 +501,14 @@ int pipboyOpen(int intent)
         return 0;
     }
 
-    ScopedGameMode gm(GameMode::kPipboy);
-
     intent = pipboyWindowInit(intent);
     if (intent == -1) {
         return -1;
     }
 
+    ScopedGameMode gm(GameMode::kPipboy);
+    windowRefresh(gPipboyWindow);
+
     touch_set_touchscreen_mode(true);
 
     mouseGetPositionInWindow(gPipboyWindow, &gPipboyPreviousMouseX, &gPipboyPreviousMouseY);