Enable `:read_list` when `:read_group` is enabled

app/policies/group_policy.rb

@@ -54,6 +54,7 @@ class GroupPolicy < BasePolicy
 
   rule { has_projects }.policy do
     enable :read_group
+    enable :read_list
     enable :read_label
   end
 

changelogs/unreleased/58149-fix-read-list-board-policy.yml

+---
+title: Fix error when viewing group issue boards when user doesn't have explicit group
+  permissions
+merge_request: 25524
+author:
+type: fixed

spec/policies/group_policy_spec.rb

@@ -83,7 +83,7 @@ describe GroupPolicy do
     end
 
     it do
-      expect_allowed(:read_group, :read_label)
+      expect_allowed(:read_group, :read_list, :read_label)
     end
 
     context 'in subgroups', :nested_groups do
@@ -91,7 +91,7 @@ describe GroupPolicy do
       let(:project) { create(:project, namespace: subgroup) }
 
       it do
-        expect_allowed(:read_group, :read_label)
+        expect_allowed(:read_group, :read_list, :read_label)
       end
     end
   end