Merge branch '20240925-clavimoniere-notes-timeline-darkmode-fix' into 'master'

Fix timeline style in dark mode

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/167230



Merged-by: Elwyn Benson <ebenson@gitlab.com>
Approved-by: Vanessa Otto <votto@gitlab.com>
Approved-by: Elwyn Benson <ebenson@gitlab.com>
Co-authored-by: Chad Lavimoniere <clavimoniere@gitlab.com>

app/assets/stylesheets/page_bundles/notes/_timeline.scss

@@ -77,11 +77,6 @@
   .timeline-entry:not(.draft-note):last-child::before {
     @apply gl-bg-default;
 
-    // stylelint-disable-next-line gitlab/no-gl-class
-    .gl-dark & {
-      @apply gl-bg-subtle;
-    }
-
     // stylelint-disable-next-line gitlab/no-gl-class
     .gl-dark .modal-body & {
       @apply gl-bg-strong;