✨ Improve pause/filament change for ExtUI (#22655)

Marlin/src/lcd/extui/ui_api.cpp

@@ -1037,6 +1037,8 @@ namespace ExtUI {
 
   #if M600_PURGE_MORE_RESUMABLE
     void setPauseMenuResponse(PauseMenuResponse response) { pause_menu_response = response; }
+    PauseMessage pauseModeStatus = PAUSE_MESSAGE_STATUS;
+    PauseMode getPauseMode() { return pause_mode;}
   #endif
 
   void printFile(const char *filename) {

Marlin/src/lcd/extui/ui_api.h

@@ -234,6 +234,8 @@ namespace ExtUI {
 
   #if M600_PURGE_MORE_RESUMABLE
     void setPauseMenuResponse(PauseMenuResponse);
+    extern PauseMessage pauseModeStatus;
+    PauseMode getPauseMode();
   #endif
 
   #if ENABLED(LIN_ADVANCE)