Fix ExtUI mesh functions (#14027)

Marlin/src/feature/babystep.cpp

   #endif
 
   #if ENABLED(BABYSTEP_ALWAYS_AVAILABLE)
-    #define BSA_ENABLE(AXIS) do{ switch (AXIS) { case X_AXIS: enable_X(); break; case Y_AXIS: enable_Y(); break; case Z_AXIS: enable_Z(); } }while(0)
+    #define BSA_ENABLE(AXIS) do{ switch (AXIS) { case X_AXIS: enable_X(); break; case Y_AXIS: enable_Y(); break; case Z_AXIS: enable_Z(); break; default: break; } }while(0)
   #else
     #define BSA_ENABLE(AXIS) NOOP
   #endif

Marlin/src/lcd/extensible_ui/ui_api.cpp

   #if HAS_LEVELING
     bool getLevelingActive() { return planner.leveling_active; }
     void setLevelingActive(const bool state) { set_bed_leveling_enabled(state); }
+    bool getMeshValid() { return leveling_is_valid(); }
     #if HAS_MESH
-      bool getMeshValid() { return leveling_is_valid(); }
       bed_mesh_t getMeshArray() { return Z_VALUES_ARR; }
       float getMeshPoint(const uint8_t xpos, const uint8_t ypos) { return Z_VALUES(xpos,ypos); }
       void setMeshPoint(const uint8_t xpos, const uint8_t ypos, const float zoff) {

Marlin/src/lcd/extensible_ui/ui_api.h

   constexpr uint8_t hotendCount   = HOTENDS;
   constexpr uint8_t fanCount      = FAN_COUNT;
 
+  #if HAS_MESH
+    typedef float (&bed_mesh_t)[GRID_MAX_POINTS_X][GRID_MAX_POINTS_Y];
+  #endif
+
   bool isMoving();
   bool isAxisPositionKnown(const axis_t);
   bool isPositionKnown(); // Axis position guaranteed, steppers active since homing
   #if HAS_LEVELING
     bool getLevelingActive();
     void setLevelingActive(const bool);
+    bool getMeshValid();
     #if HAS_MESH
-      #include "../../feature/bedlevel/bedlevel.h"
-      bool getMeshValid();
       bed_mesh_t getMeshArray();
       float getMeshPoint(const uint8_t xpos, const uint8_t ypos);
       void setMeshPoint(const uint8_t xpos, const uint8_t ypos, const float zval);