Fix, clarify LCD_TIMEOUT_TO_STATUS

Replaces #17887

Co-Authored-By: Daniel Callander <knifa@users.noreply.github.com>

Marlin/src/lcd/extui/lib/ftdi_eve_touch_ui/screens/base_screen.cpp

     return false;
   }
 
-  #if LCD_TIMEOUT_TO_STATUS
+  #if LCD_TIMEOUT_TO_STATUS > 0
     if (EventLoop::get_pressed_tag() != 0) {
       reset_menu_timeout();
     }
 }
 
 void BaseScreen::onIdle() {
-  #if LCD_TIMEOUT_TO_STATUS
+  #if LCD_TIMEOUT_TO_STATUS > 0
     if ((millis() - last_interaction) > LCD_TIMEOUT_TO_STATUS) {
       reset_menu_timeout();
       #if ENABLED(TOUCH_UI_DEBUG)
 }
 
 void BaseScreen::reset_menu_timeout() {
-  #if LCD_TIMEOUT_TO_STATUS
+  #if LCD_TIMEOUT_TO_STATUS > 0
     last_interaction = millis();
   #endif
 }
 
-#if LCD_TIMEOUT_TO_STATUS
+#if LCD_TIMEOUT_TO_STATUS > 0
   uint32_t BaseScreen::last_interaction;
 #endif
 

Marlin/src/lcd/extui/lib/ftdi_eve_touch_ui/screens/screens.h

 
 class BaseScreen : public UIScreen {
   protected:
-    #if LCD_TIMEOUT_TO_STATUS
+    #if LCD_TIMEOUT_TO_STATUS > 0
       static uint32_t last_interaction;
     #endif
 

Marlin/src/lcd/ultralcd.cpp

   #endif
 #endif
 
-#if HAS_LCD_MENU && LCD_TIMEOUT_TO_STATUS
+#if HAS_LCD_MENU && LCD_TIMEOUT_TO_STATUS > 0
   bool MarlinUI::defer_return_to_status;
 #endif
 
   static uint16_t max_display_update_time = 0;
   millis_t ms = millis();
 
-  #if HAS_LCD_MENU && LCD_TIMEOUT_TO_STATUS
+  #if HAS_LCD_MENU && LCD_TIMEOUT_TO_STATUS > 0
     static millis_t return_to_status_ms = 0;
     #define RESET_STATUS_TIMEOUT() (return_to_status_ms = ms + LCD_TIMEOUT_TO_STATUS)
   #else
         NOLESS(max_display_update_time, millis() - ms);
     }
 
-    #if HAS_LCD_MENU && LCD_TIMEOUT_TO_STATUS
+    #if HAS_LCD_MENU && LCD_TIMEOUT_TO_STATUS > 0
       // Return to Status Screen after a timeout
       if (on_status_screen() || defer_return_to_status)
         RESET_STATUS_TIMEOUT();

Marlin/src/lcd/ultralcd.h

     #endif
 
     FORCE_INLINE static void defer_status_screen(const bool defer=true) {
-      TERN(LCD_TIMEOUT_TO_STATUS, defer_return_to_status = defer, UNUSED(defer));
+      #if LCD_TIMEOUT_TO_STATUS > 0
+        defer_return_to_status = defer;
+      #else
+        UNUSED(defer);
+      #endif
     }
 
     static inline void goto_previous_screen_no_defer() {
 
   #if HAS_SPI_LCD
     #if HAS_LCD_MENU
-      #if LCD_TIMEOUT_TO_STATUS
+      #if LCD_TIMEOUT_TO_STATUS > 0
         static bool defer_return_to_status;
       #else
         static constexpr bool defer_return_to_status = false;