Use mapState instead of a getter

app/assets/javascripts/notes/components/comment_form.vue

 <script>
   import $ from 'jquery';
-  import { mapActions, mapGetters } from 'vuex';
+  import { mapActions, mapGetters, mapState } from 'vuex';
   import _ from 'underscore';
   import Autosize from 'autosize';
   import { __, sprintf } from '~/locale';
@@ -52,6 +52,8 @@
         'getNoteableData',
         'getNotesData',
         'openState',
+      ]),
+      ...mapState([
         'isToggleStateButtonLoading',
       ]),
       noteableDisplayName() {

app/assets/javascripts/notes/stores/getters.js

@@ -9,7 +9,6 @@ export const getNotesDataByProp = state => prop => state.notesData[prop];
 export const getNoteableData = state => state.noteableData;
 export const getNoteableDataByProp = state => prop => state.noteableData[prop];
 export const openState = state => state.noteableData.state;
-export const isToggleStateButtonLoading = state => state.isToggleStateButtonLoading;
 
 export const getUserData = state => state.userData || {};
 export const getUserDataByProp = state => prop => state.userData && state.userData[prop];