Fix issues count in the secondary nav under Programmes

The import issues counter in the secondary nav was double counting import issues where both the vaccination record and the patient have pending changes.

Because the import issues controller is doing this correctly, there was also a discrepancy between the count and what the user saw when they navigated to the import issues list.

Author: benilovj

app/components/app_programme_navigation_component.rb

@@ -60,19 +60,22 @@ def call
   private
 
   def import_issues_text
-    vaccination_record_issues_count =
-      organisation
-        .vaccination_records
+    vaccination_records_with_issues =
+      helpers
+        .policy_scope(VaccinationRecord)
         .where(programme:)
         .with_pending_changes
         .distinct
-        .count
 
-    patient_issues_count =
-      helpers.policy_scope(Patient).with_pending_changes.count
+    patients_with_issues = helpers.policy_scope(Patient).with_pending_changes
+
+    unique_import_issues =
+      (vaccination_records_with_issues + patients_with_issues).uniq do |record|
+        record.is_a?(VaccinationRecord) ? record.patient : record
+      end
 
     base_text = I18n.t("import_issues.index.title")
-    count = vaccination_record_issues_count + patient_issues_count
+    count = unique_import_issues.count
 
     safe_join([base_text, " ", render(AppCountComponent.new(count:))])
   end