Fix manual moves for switching tools (#10868)

Marlin/src/inc/Conditionals_LCD.h

 #if ENABLED(SWITCHING_EXTRUDER)                               // One stepper for every two EXTRUDERS
   #if EXTRUDERS > 4
     #define E_STEPPERS    3
-    #define E_MANUAL      3
   #elif EXTRUDERS > 2
     #define E_STEPPERS    2
-    #define E_MANUAL      2
   #else
     #define E_STEPPERS    1
   #endif

Marlin/src/lcd/ultralcd.cpp

 
     #endif
 
-    MENU_ITEM(submenu, MSG_MOVE_E, lcd_move_get_e_amount);
-    #if E_MANUAL > 1
-      MENU_ITEM(submenu, MSG_MOVE_E MSG_MOVE_E1, lcd_move_get_e0_amount);
-      MENU_ITEM(submenu, MSG_MOVE_E MSG_MOVE_E2, lcd_move_get_e1_amount);
-      #if E_MANUAL > 2
+    #if ENABLED(SWITCHING_EXTRUDER) || ENABLED(SWITCHING_NOZZLE)
+
+      // Only the current...
+      MENU_ITEM(submenu, MSG_MOVE_E, lcd_move_get_e_amount);
+      // ...and the non-switching
+      #if E_MANUAL == 5
+        MENU_ITEM(submenu, MSG_MOVE_E MSG_MOVE_E5, lcd_move_get_e4_amount);
+      #elif E_MANUAL == 3
         MENU_ITEM(submenu, MSG_MOVE_E MSG_MOVE_E3, lcd_move_get_e2_amount);
-        #if E_MANUAL > 3
-          MENU_ITEM(submenu, MSG_MOVE_E MSG_MOVE_E4, lcd_move_get_e3_amount);
-          #if E_MANUAL > 4
-            MENU_ITEM(submenu, MSG_MOVE_E MSG_MOVE_E5, lcd_move_get_e4_amount);
-          #endif // E_MANUAL > 4
-        #endif // E_MANUAL > 3
-      #endif // E_MANUAL > 2
-    #endif // E_MANUAL > 1
+      #endif
+
+    #else
+
+      // Independent extruders with one E-stepper per hotend
+      MENU_ITEM(submenu, MSG_MOVE_E, lcd_move_get_e_amount);
+      #if E_MANUAL > 1
+        MENU_ITEM(submenu, MSG_MOVE_E MSG_MOVE_E1, lcd_move_get_e0_amount);
+        MENU_ITEM(submenu, MSG_MOVE_E MSG_MOVE_E2, lcd_move_get_e1_amount);
+        #if E_MANUAL > 2
+          MENU_ITEM(submenu, MSG_MOVE_E MSG_MOVE_E3, lcd_move_get_e2_amount);
+          #if E_MANUAL > 3
+            MENU_ITEM(submenu, MSG_MOVE_E MSG_MOVE_E4, lcd_move_get_e3_amount);
+            #if E_MANUAL > 4
+              MENU_ITEM(submenu, MSG_MOVE_E MSG_MOVE_E5, lcd_move_get_e4_amount);
+            #endif // E_MANUAL > 4
+          #endif // E_MANUAL > 3
+        #endif // E_MANUAL > 2
+      #endif // E_MANUAL > 1
+
+    #endif
 
     END_MENU();
   }