Fix ci mini graph dropdown alignment and positioning

app/assets/javascripts/pipelines/components/stage.vue

@@ -165,6 +165,7 @@ export default {
       class="mini-pipeline-graph-dropdown-toggle js-builds-dropdown-button"
       data-placement="top"
       data-toggle="dropdown"
+      data-display="static"
       type="button"
       aria-haspopup="true"
       aria-expanded="false"

app/assets/stylesheets/pages/pipelines.scss

@@ -1001,7 +1001,7 @@ button.mini-pipeline-graph-dropdown-toggle {
   /**
    * Center dropdown menu in mini graph
    */
-  &.dropdown-menu {
+  .dropdown &.dropdown-menu {
     transform: translate(-80%, 0);
 
     @media (min-width: map-get($grid-breakpoints, md)) {