fixed issue增加pm相关查询索引

db/migrate/202409204354372_add_index_pm_to_issues.rb

@@ -0,0 +1,7 @@
+class AddIndexPmToIssues < ActiveRecord::Migration[5.2]
+  def change
+    add_index :issues, :pm_project_id
+    add_index :issues, :pm_issue_type
+    add_index :issues, :pm_sprint_id
+  end
+end