✨ STATUS_MESSAGE_TIMEOUT_SEC (#23135)

Co-authored-by: Scott Lahteine <thinkyhead@users.noreply.github.com>

Marlin/src/lcd/marlinui.h

@@ -344,6 +344,10 @@ public:
     static char status_message[];
     static uint8_t alert_level; // Higher levels block lower levels
 
+    #if HAS_STATUS_MESSAGE_TIMEOUT
+      static millis_t status_message_expire_ms; // Reset some status messages after a timeout
+    #endif
+
     #if ENABLED(STATUS_MESSAGE_SCROLLING)
       static uint8_t status_scroll_offset;
       static void advance_status_scroll();