FIX: Correctly toggle bulk select checkboxes for regular users (#29984)

Non-admin/moderator users can bulk select items in new/unread, but not in
latest/top/hot. This commit ensures that when the user can no longer
bulk select items in a list, the bulk select checkboxes in the topic list
rows are hidden.

app/assets/javascripts/discourse/app/components/topic-list.js

@@ -72,7 +72,9 @@ export default class TopicList extends Component.extend(LoadMore) {
   // for the classNameBindings
   @dependentKeyCompat
   get bulkSelectEnabled() {
-    return this.bulkSelectHelper?.bulkSelectEnabled;
+    return (
+      this.get("canBulkSelect") && this.bulkSelectHelper?.bulkSelectEnabled
+    );
   }
 
   get toggleInTitle() {

spec/system/discovery_list_spec.rb

@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-describe "Topic list focus", type: :system do
+describe "Discovery list", type: :system do
   fab!(:topics) { Fabricate.times(10, :post).map(&:topic) }
   fab!(:reply) { Fabricate(:post, topic: topics.first) }
 
@@ -38,4 +38,27 @@ describe "Topic list focus", type: :system do
     expect(page).to have_css("th[data-sort-order='posts'][aria-sort=ascending]")
     expect(nth_topic_id(10)).to eq(reply.topic_id.to_s)
   end
+
+  describe "bulk topic options" do
+    fab!(:user)
+    fab!(:topic) { Fabricate(:topic, user: user) }
+    fab!(:post1) { create_post(user: user, topic: topic) }
+    fab!(:post2) { create_post(topic: topic) }
+
+    it "should correctly show/hide the bulk select toggle for regular users" do
+      sign_in(user)
+      visit("/unread")
+
+      # The bulk select toggle should be visible, the user has an unread post
+      find("button.bulk-select").click
+      expect(page).to have_css(".topic-list-body .bulk-select")
+
+      find("#navigation-bar .latest > a").click
+
+      # No bulk select toggle or checkboxes
+      # this action is not available for this user in /latest
+      expect(page).to have_no_css(".topic-list-body .bulk-select")
+      expect(page).to have_no_css("button.bulk-select")
+    end
+  end
 end