Move Stepper::synchronize to Planner (#10713)

Co-Authored-By: ejtagle <ejtagle@hotmail.com>

Marlin/src/sd/cardreader.cpp

@@ -28,6 +28,7 @@
 
 #include "../Marlin.h"
 #include "../lcd/ultralcd.h"
+#include "../module/planner.h"
 #include "../module/stepper.h"
 #include "../module/printcounter.h"
 #include "../core/language.h"
@@ -962,7 +963,7 @@ uint16_t CardReader::get_num_Files() {
 }
 
 void CardReader::printingHasFinished() {
-  stepper.synchronize();
+  planner.synchronize();
   file.close();
   if (file_subcall_ctr > 0) { // Heading up to a parent file that called current as a procedure.
     file_subcall_ctr--;