restored mpy stack size to original size (to fix stack overflow crashes)

micropython/ports/esp32/main.c

@@ -240,7 +240,7 @@ void app_main(void) {
     MICROPY_BOARD_STARTUP();
 
     // Create and transfer control to the MicroPython task.
-    xTaskCreatePinnedToCore(mp_task, "mp_task", (MP_TASK_STACK_SIZE / sizeof(StackType_t)) / 2, NULL, MP_TASK_PRIORITY, &mp_main_task_handle, MP_TASK_COREID);
+    xTaskCreatePinnedToCore(mp_task, "mp_task", MP_TASK_STACK_SIZE / sizeof(StackType_t), NULL, MP_TASK_PRIORITY, &mp_main_task_handle, MP_TASK_COREID);
     os_app_main(); // ./badge23/ entry point
 }