Merge branch 'bootstrap-tooltip-hover' into 'master'

Set bootstrap tooltip vue directive to only display on hover

Closes #46824

See merge request gitlab-org/gitlab-ce!19294

app/assets/javascripts/vue_shared/directives/tooltip.js

@@ -2,7 +2,9 @@ import $ from 'jquery';
 
 export default {
   bind(el) {
-    $(el).tooltip();
+    $(el).tooltip({
+      trigger: 'hover',
+    });
   },
 
   componentUpdated(el) {