Update ExtUI, add test under DUE (#15298)

Marlin/src/lcd/extensible_ui/ui_api.cpp

@@ -819,6 +819,9 @@ namespace ExtUI {
           #endif
         }
       }
+      void onMeshUpdate(const uint8_t xpos, const uint8_t ypos, const float zval) {
+        UNUSED(xpos); UNUSED(ypos); UNUSED(zval);
+      }
     #endif
   #endif
 

Marlin/src/lcd/extensible_ui/ui_api.h

@@ -96,7 +96,7 @@ namespace ExtUI {
     void  setAxisCurrent_mA(const float, const axis_t);
     void  setAxisCurrent_mA(const float, const extruder_t);
 
-    int getTMCBumpSensitivity(const axis_t);
+     int getTMCBumpSensitivity(const axis_t);
     void setTMCBumpSensitivity(const float, const axis_t);
   #endif
 
@@ -272,7 +272,7 @@ namespace ExtUI {
       void changeDir(const char * const dirname);
       void upDir();
       bool isAtRootDir();
-      uint16_t    count();
+      uint16_t count();
   };
 
   /**