Fix "autotune" LCD message (#20127)

Marlin/src/gcode/temp/M303.cpp

     KEEPALIVE_STATE(NOT_BUSY);
   #endif
 
-  ui.set_status(GET_TEXT(MSG_PID_AUTOTUNE));
+  ui.set_status_P(GET_TEXT(MSG_PID_AUTOTUNE));
   thermalManager.PID_autotune(temp, e, c, u);
   ui.reset_status();
 }