Add lock version to issuable helpers

app/controllers/concerns/issuable_actions.rb

@@ -58,7 +58,8 @@ module IssuableActions
       title_text: issuable.title,
       description: view_context.markdown_field(issuable, :description),
       description_text: issuable.description,
-      task_status: issuable.task_status
+      task_status: issuable.task_status,
+      lock_version: issuable.lock_version
     }
     if issuable.edited?

app/helpers/issuables_helper.rb

@@ -269,6 +269,7 @@ module IssuablesHelper
       markdownPreviewPath: preview_markdown_path(parent),
       markdownDocsPath: help_page_path('user/markdown'),
       markdownVersion: issuable.cached_markdown_version,
+      lockVersion: issuable.lock_version,
       issuableTemplates: issuable_templates(issuable),
       initialTitleHtml: markdown_field(issuable, :title),
       initialTitleText: issuable.title,