Add missing ExtUI user confirmation (#14992)

Marlin/src/feature/prusa_MMU2/mmu2.cpp

@@ -42,6 +42,10 @@ MMU2 mmu2;
   #include "../../feature/host_actions.h"
 #endif
 
+#if ENABLED(EXTENSIBLE_UI)
+  #include "../../lcd/extensible_ui/ui_api.h"
+#endif
+
 #define DEBUG_OUT ENABLED(MMU2_DEBUG)
 #include "../../core/debug_out.h"
 
@@ -711,6 +715,9 @@ void MMU2::filament_runout() {
       #if ENABLED(HOST_PROMPT_SUPPORT)
         host_prompt_do(PROMPT_USER_CONTINUE, PSTR("MMU2 Eject Recover"), PSTR("Continue"));
       #endif
+      #if ENABLED(EXTENSIBLE_UI)
+        ExtUI::onStatusChanged(PSTR("MMU2 Eject Recover"));
+      #endif
       while (wait_for_user) idle();
       BUZZ(200, 404);
       BUZZ(200, 404);