e_xkb: reconfig when we have set a new set of layouts

When in the config dialog a new set of layouts is created, this set has
to be told to the displayserver. Like at the startup of e, so calling
e_xkb_reconfig().

fix T3072

src/modules/xkbswitch/e_mod_config.c

@@ -295,6 +295,7 @@ _basic_apply(E_Config_Dialog *cfd EINA_UNUSED, E_Config_Dialog_Data *cfdata)
         e_config->xkb.used_options = eina_list_append(e_config->xkb.used_options, oc);
      }
 
+   e_xkb_reconfig();
    e_config_save_queue();
    return 1;
 }