Module does not handle translated revisions or moderation state.

The module displays the concurrent edit warning messages regardless if the revision translation is affected. For example, a page is created with English as the base language and then translated to French. If the English page is edited while someone also edits the French version, a concurrent edit warning will be displayed even though the edit(s) on the French revision do not affect the English revision.

The fix I am proposing uses isRevisionTranslationAffected() to only show the warning message when the page revisions are for the same language.

1. Clean drupal 8.6.x
2. Modules: Content Moderation, Workflows, Language, Content Translation
3. Install second language (example: French)
4. Allow content to be translated (all fields for basic page content type) /admin/config/regional/content-language
5. Create basic page with English as base language.
6. Translate same page to French.
7. Edit both at the same time (separate browser tabs/windows).
8. Modify English page and save as Draft.
9. French page will display concurrent edit warning message.

I would also propose the module uses isLiveRevision() rather than isPublished() to determine if the 'published' warning message is displayed. Currently the published warning message is always displayed after a page is published regardless of the moderation state. By using isLiveRevision(), a page that has been published but is currently being edited (draft or any other moderation state), will display the draft warning message.

1. Clean drupal 8.6.x
2. Modules: Content Moderation, Workflows
3. Create and publish basic page.
7. Edit page in two different browser tabs or windows.
8. Modify and save as Draft in one tab.
9. The other tab will display 'Published' concurrent edit warning message even though the edited page has a moderation state of 'Draft'.