Merge branch 'note-form-login-link-referer' into 'master'

Added redirect_to_referer to login link on issues

## What does this MR do?

Adds a `redirect_to_referer` param to login & register links on issues when not logged in. This makes the login box redirect back to the issue after login.

## What are the relevant issue numbers?

Closes #19968 

See merge request !5344

CHANGELOG

@@ -42,6 +42,7 @@ v 8.10.0 (unreleased)
   - Add syntax for multiline blockquote using `>>>` fence !3954
   - Fix viewing notification settings when a project is pending deletion
   - Updated compare dropdown menus to use GL dropdown
+  - Redirects back to issue after clicking login link
   - Eager load award emoji on notes
   - Allow to define manual actions/builds on Pipelines and Environments
   - Fix pagination when sorting by columns with lots of ties (like priority)

app/views/projects/notes/_notes_with_form.html.haml

@@ -14,9 +14,9 @@
       .disabled-comment.text-center
         .disabled-comment-text.inline
           Please
-          = link_to "register",new_user_session_path
+          = link_to "register", new_session_path(:user, redirect_to_referer: 'yes')
           or
-          = link_to "login",new_user_session_path
+          = link_to "login", new_session_path(:user, redirect_to_referer: 'yes')
           to post a comment
 
 :javascript