Use labels widget on epic board and mr sidebar

Review feedback

app/assets/javascripts/vue_shared/components/sidebar/labels_select_widget/labels_select_root.vue

@@ -341,7 +341,6 @@ export default {
             :labels-create-title="labelsCreateTitle"
             :selected-labels="issuableLabels"
             :variant="variant"
-            :issuable-type="issuableType"
             :is-visible="edit"
             :full-path="fullPath"
             :workspace-type="workspaceType"
@@ -364,7 +363,6 @@ export default {
       :labels-create-title="labelsCreateTitle"
       :selected-labels="issuableLabels"
       :variant="variant"
-      :issuable-type="issuableType"
       :full-path="fullPath"
       :workspace-type="workspaceType"
       :attr-workspace-path="attrWorkspacePath"

app/assets/stylesheets/page_bundles/boards.scss

@@ -472,7 +472,7 @@
   }
 
   .show.dropdown .dropdown-menu {
-    width: 100%;
+    @include gl-w-full;
   }
 }
 

app/controllers/projects/merge_requests_controller.rb

@@ -42,7 +42,7 @@ class Projects::MergeRequestsController < Projects::MergeRequests::ApplicationCo
     push_frontend_feature_flag(:restructured_mr_widget, project, default_enabled: :yaml)
     push_frontend_feature_flag(:mr_changes_fluid_layout, project, default_enabled: :yaml)
     push_frontend_feature_flag(:mr_attention_requests, project, default_enabled: :yaml)
-    push_frontend_feature_flag(:labels_widget, @project, default_enabled: :yaml)
+    push_frontend_feature_flag(:labels_widget, project, default_enabled: :yaml)
 
     # Usage data feature flags
     push_frontend_feature_flag(:users_expanding_widgets_usage_data, @project, default_enabled: :yaml)

ee/spec/helpers/boards_helper_spec.rb

@@ -33,6 +33,19 @@ RSpec.describe BoardsHelper do
     end
   end
 
+  describe '#build_issue_link_base' do
+    context 'when epic board' do
+      let_it_be(:epic_board) { create(:epic_board, group: group) }
+
+      it 'generates the correct url' do
+        assign(:board, epic_board)
+        assign(:group, group)
+
+        expect(helper.build_issue_link_base).to eq "/groups/#{group.full_path}/-/epics"
+      end
+    end
+  end
+
   describe '#board_base_url' do
     context 'when epic board' do
       let_it_be(:epic_board) { create(:epic_board, group: group) }