Fix lock version for epics

app/assets/javascripts/issue_show/components/app.vue

@@ -133,7 +133,8 @@ export default {
     },
     lockVersion: {
       type: Number,
-      required: true,
+      required: false,
+      default: 0,
     },
   },
   data() {

ee/app/assets/javascripts/epic/components/epic_body.vue

@@ -30,6 +30,7 @@ export default {
       'initialTitleText',
       'initialDescriptionHtml',
       'initialDescriptionText',
+      'lockVersion',
     ]),
   },
 };
@@ -49,6 +50,7 @@ export default {
         :show-delete-button="canDestroy"
         :initial-title-html="initialTitleHtml"
         :initial-title-text="initialTitleText"
+        :lock-version="lockVersion"
         :initial-description-html="initialDescriptionHtml"
         :initial-description-text="initialDescriptionText"
         :show-inline-edit-button="true"

ee/app/assets/javascripts/epic/store/state.js

@@ -33,6 +33,7 @@ export default () => ({
   initialTitleText: '',
   initialDescriptionHtml: '',
   initialDescriptionText: '',
+  lockVersion: 0,
 
   todoExists: false,
   startDateSourcingMilestoneTitle: '',

ee/app/helpers/epics_helper.rb

@@ -30,6 +30,7 @@ module EpicsHelper
         start_date: epic.due_date_sourcing_milestone&.start_date,
         due_date: epic.due_date_sourcing_milestone&.due_date
       },
+      lock_version: epic.lock_version,
       end_date: epic.end_date,
       state: epic.state,
       namespace: group.path,