Fix title of discussion jump button at top of page

app/assets/javascripts/diff_notes/components/jump_to_discussion.js

@@ -16,6 +16,13 @@ const JumpToDiscussion = Vue.extend({
     };
   },
   computed: {
+    buttonText: function () {
+      if (this.discussionId) {
+        return 'Jump to next unresolved discussion';
+      } else {
+        return 'Jump to first unresolved discussion';
+      }
+    },
     allResolved: function () {
       return this.unresolvedDiscussionCount === 0;
     },

app/views/discussions/_jump_to_next.html.haml

@@ -3,7 +3,7 @@
   %jump-to-discussion{ "inline-template" => true, ":discussion-id" => "'#{discussion.try(:id)}'" }
     .btn-group{ role: "group", "v-show" => "!allResolved", "v-if" => "showButton" }
       %button.btn.btn-default.discussion-next-btn.has-tooltip{ "@click" => "jumpToNextUnresolvedDiscussion",
-        title: "Jump to next unresolved discussion",
-        "aria-label" => "Jump to next unresolved discussion",
+        ":title" => "buttonText",
+        ":aria-label" => "buttonText",
         data: { container: "body" } }
         = custom_icon("next_discussion")

changelogs/unreleased/dm-fix-jump-button.yml

+---
+title: Fix title of discussion jump button at top of page
+merge_request:
+author: