Changed `author_avatar` to inline-block class

Fixes #64746

app/helpers/avatars_helper.rb

@@ -52,7 +52,7 @@ module AvatarsHelper
       user: commit_or_event.author,
       user_name: commit_or_event.author_name,
       user_email: commit_or_event.author_email,
-      css_class: 'd-none d-sm-inline'
+      css_class: 'd-none d-sm-inline-block'
     }))
   end
 

changelogs/unreleased/64746-Commit-authors-avatar-sretched-in-commit-view-if-no-image-is-loaded.yml

+---
+title: Fixed distorted avatars when resource not reachable
+merge_request: 30904
+author: Marc Schwede
+type: other