Fixes the top position of job log topbar

The top bar of the job log was always expecting the
performance bar to be enabled. This commit adds CSS
to fix the top position for both scenarios.

app/assets/stylesheets/pages/builds.scss

@@ -75,7 +75,11 @@
     @include build-trace-top-bar(35px);
 
     &.has-archived-block {
-      top: $header-height + $performance-bar-height + 28px;
+      top: $header-height + 28px;
+
+      .with-performance-bar & {
+        top: $header-height + $performance-bar-height + 28px;
+      }
     }
 
     &.affix {

changelogs/unreleased/57583-sticky-bar.yml

+---
+title: Fixes archived sticky top bar without perfomance bar
+merge_request:
+author:
+type: fixed