Eager load project relations in IssueParser

CHANGELOG

@@ -93,6 +93,7 @@ v 8.9.0 (unreleased)
   - Hide global side navigation by default
   - Remove tanuki logo from side navigation; center on top nav
   - Include user relationships when retrieving award_emoji
+  - Various associations are now eager loaded when parsing issue references to reduce the number of queries executed
 
 v 8.8.5 (unreleased)
   - Ensure branch cleanup regardless of whether the GitHub import process succeeds

lib/banzai/reference_parser/issue_parser.rb

@@ -25,7 +25,21 @@ module Banzai
       def issues_for_nodes(nodes)
         @issues_for_nodes ||= grouped_objects_for_nodes(
           nodes,
-          Issue.all.includes(:author, :assignee, :project),
+          Issue.all.includes(
+            :author,
+            :assignee,
+            {
+              # These associations are primarily used for checking permissions.
+              # Eager loading these ensures we don't end up running dozens of
+              # queries in this process.
+              project: [
+                { namespace: :owner },
+                { group: [:owners, :group_members] },
+                :invited_groups,
+                :project_members
+              ]
+            }
+          ),
           self.class.data_attribute
         )
       end