Update single page notification allow list

Add 22 more pages to the single page notification trial list. All these
pages are using templates that the single page notification button is
already on, therefore no template updates are required.

app/controllers/content_items_controller.rb

@@ -219,6 +219,28 @@ def in_single_page_notifications_trial?
       /guidance/travel-to-england-from-another-country-during-coronavirus-covid-19
       /guidance/covid-19-coronavirus-restrictions-what-you-can-and-cannot-do
       /government/publications/face-coverings-when-to-wear-one-and-how-to-make-your-own
+      /guidance/commercial-court-hearing-and-trial-dates
+      /guidance/london-circuit-commercial-court-hearing-and-trial-dates
+      /guidance/united-kingdom-single-issuing-authority-uksia
+      /government/publications/current-catch-limits-over-10-metre-non-sector-pool
+      /government/publications/current-catch-limits-10-metres-and-under-pool
+      /government/publications/fishing-vessel-licence-variations
+      /guidance/check-if-youre-eligible-for-making-tax-digital-for-income-tax
+      /guidance/check-when-to-sign-up-for-making-tax-digital-for-income-tax
+      /guidance/find-software-thats-compatible-with-making-tax-digital-for-income-tax
+      /guidance/using-making-tax-digital-for-income-tax
+      /guidance/sign-up-your-business-for-making-tax-digital-for-income-tax
+      /guidance/list-of-customs-agents-and-fast-parcel-operators
+      /guidance/check-if-you-need-to-register-for-plastic-packaging-tax
+      /guidance/work-out-which-packaging-is-subject-to-plastic-packaging-tax
+      /guidance/check-which-plastic-packaging-is-exempt-from-plastic-packaging-tax
+      /guidance/examples-of-tests-and-calculations-for-plastic-packaging-tax
+      /guidance/register-for-plastic-packaging-tax
+      /guidance/claim-a-credit-or-defer-paying-plastic-packaging-tax
+      /guidance/completing-your-plastic-packaging-tax-return
+      /guidance/register-a-group-of-companies-for-plastic-packaging-tax
+      /guidance/decide-if-you-need-to-register-for-plastic-packaging-tax
+      /guidance/uk-trade-agreements-with-non-eu-countries
     ].include? @content_item.base_path
   end
 end