Revert "Popups don't accept first focus clicks"

This reverts commit 9d40d619709ce830372835ca29f516b73a685317.

src/video/cocoa/SDL_cocoawindow.m

@@ -1646,10 +1646,11 @@ static int Cocoa_SendMouseButtonClicks(SDL_Mouse *mouse, NSEvent *theEvent, SDL_
 
 - (BOOL)acceptsFirstMouse:(NSEvent *)theEvent
 {
-    if (SDL_WINDOW_IS_POPUP(data->window)) {
-        return NO;
+    if (SDL_GetHint(SDL_HINT_MOUSE_FOCUS_CLICKTHROUGH)) {
+        return SDL_GetHintBoolean(SDL_HINT_MOUSE_FOCUS_CLICKTHROUGH, SDL_FALSE);
+    } else {
+        return SDL_GetHintBoolean("SDL_MAC_MOUSE_FOCUS_CLICKTHROUGH", SDL_FALSE);
     }
-    return SDL_GetHintBoolean(SDL_HINT_MOUSE_FOCUS_CLICKTHROUGH, SDL_FALSE);
 }
 
 @end