[2.0.x] Add Z_AFTER_PROBING option (#10058)

Some "fix-mounted" probes need manual stowing. And after probing some may prefer to raise or lower the nozzle. This restores an old option but tailors it to allow raise or lower as preferred.

Marlin/src/gcode/probe/G30.cpp

@@ -51,7 +51,8 @@ void GcodeSuite::G30() {
 
   setup_for_endstop_or_probe_move();
 
-  const float measured_z = probe_pt(xpos, ypos, parser.boolval('E'), 1);
+  const bool do_stow = parser.boolval('E');
+  const float measured_z = probe_pt(xpos, ypos, do_stow, 1);
 
   if (!isnan(measured_z)) {
     SERIAL_PROTOCOLPAIR("Bed X: ", FIXFLOAT(xpos));
@@ -61,6 +62,8 @@ void GcodeSuite::G30() {
 
   clean_up_after_endstop_or_probe_move();
 
+  if (do_stow) move_z_after_probing();
+
   report_current_position();
 }
 

Marlin/src/gcode/probe/M401_M402.cpp

@@ -25,16 +25,24 @@
 #if HAS_BED_PROBE
 
 #include "../gcode.h"
+#include "../../module/motion.h"
 #include "../../module/probe.h"
 
 /**
  * M401: Deploy and activate the Z probe
  */
-void GcodeSuite::M401() { DEPLOY_PROBE(); }
+void GcodeSuite::M401() {
+  DEPLOY_PROBE();
+  report_current_position();
+}
 
 /**
  * M402: Deactivate and stow the Z probe
  */
-void GcodeSuite::M402() { STOW_PROBE(); }
+void GcodeSuite::M402() {
+  STOW_PROBE();
+  move_z_after_probing();
+  report_current_position();
+}
 
 #endif // HAS_BED_PROBE