Fix Load Filament wait (#20243)

Marlin/src/feature/pause.cpp

@@ -199,7 +199,7 @@ bool load_filament(const float &slow_load_length/*=0*/, const float &fast_load_l
     first_impatient_beep(max_beep_count);
 
     KEEPALIVE_STATE(PAUSED_FOR_USER);
-
+    wait_for_user = true;    // LCD click or M108 will clear this
     #if ENABLED(HOST_PROMPT_SUPPORT)
       const char tool = '0'
         #if NUM_RUNOUT_SENSORS > 1