Make getfilename_sorted standard for listings

Marlin/src/lcd/extensible_ui/ui_api.cpp

         #endif
       pos;
 
-      #if ENABLED(SDCARD_SORT_ALPHA)
-        card.getfilename_sorted(nr);
-      #else
-        card.getfilename(nr);
-      #endif
+      card.getfilename_sorted(nr);
       return card.filename && card.filename[0] != '\0';
     #endif
   }

Marlin/src/lcd/menu/menu_sdcard.cpp

         #endif
       i;
 
-      #if ENABLED(SDCARD_SORT_ALPHA)
-        card.getfilename_sorted(nr);
-      #else
-        card.getfilename(nr);
-      #endif
+      card.getfilename_sorted(nr);
 
       if (card.filenameIsDir)
         MENU_ITEM(sddirectory, MSG_CARD_MENU, card);

Marlin/src/sd/cardreader.h

       FORCE_INLINE void setSortFolders(int i) { sort_folders = i; presort(); }
       //FORCE_INLINE void setSortReverse(bool b) { sort_reverse = b; }
     #endif
+  #else
+    FORCE_INLINE void getfilename_sorted(const uint16_t nr) { getfilename(nr); }
   #endif
 
   #if ENABLED(POWER_LOSS_RECOVERY)