Allow users to sort offline sheet by consent time

This moves the date to the start of the consent string,
allowing it to be sorted alphabetically.

Also, the newest consents must be shown first.

Author: alistair-white-horne-tng

app/lib/reports/export_formatters.rb

@@ -50,8 +50,9 @@ def consent_status(patient:, programme:, academic_year:)
 
   def consent_details(consents:)
     values =
-      consents.map do |consent|
-        "#{consent.response.humanize} by #{consent.name} at #{consent.created_at}"
+      consents.sort_by(&:created_at).reverse.map do |consent|
+        "On #{consent.created_at.to_date} at #{consent.created_at.strftime('%H:%M')} " \
+          "#{consent.response.humanize.upcase} by #{consent.name}"
       end
 
     values.join(", ")

spec/lib/reports/programme_vaccinations_exporter_spec.rb

@@ -460,8 +460,7 @@
 
         it "includes the information" do
           expect(rows.first.to_hash).to include(
-            "CONSENT_DETAILS" =>
-              "Given by John Smith at 2024-01-01 12:05:20 +0000",
+            "CONSENT_DETAILS" => "On 2024-01-01 at 12:05 GIVEN by John Smith",
             "CONSENT_STATUS" => expected_consent_status,
             "HEALTH_QUESTION_ANSWERS" =>
               consent