Update acessibility tests

Author: chris-elliott-nhsd

frontend/src/__tests__/components/forms/ReviewEmailTemplate/__snapshots__/ReviewEmailTemplate.test.tsx.snap

@@ -14,6 +14,7 @@ exports[`Review email form renders matches error snapshot 1`] = `
         <a
           class="nhsuk-back-link__link"
           href="/templates/manage-templates"
+          id="back-link"
         >
           <svg
             aria-hidden="true"
@@ -300,6 +301,7 @@ exports[`Review email form renders matches snapshot when navigating from edit sc
         <a
           class="nhsuk-back-link__link"
           href="/templates/manage-templates"
+          id="back-link"
         >
           <svg
             aria-hidden="true"
@@ -549,6 +551,7 @@ exports[`Review email form renders matches snapshot when navigating from manage
         <a
           class="nhsuk-back-link__link"
           href="/templates/manage-templates"
+          id="back-link"
         >
           <svg
             aria-hidden="true"

frontend/src/__tests__/components/forms/ReviewNHSAppTemplate/__snapshots__/ReviewNHSAppTemplate.test.tsx.snap

@@ -14,6 +14,7 @@ exports[`Review nhs app form renders matches error snapshot 1`] = `
         <a
           class="nhsuk-back-link__link"
           href="/templates/manage-templates"
+          id="back-link"
         >
           <svg
             aria-hidden="true"
@@ -274,6 +275,7 @@ exports[`Review nhs app form renders matches snapshot when navigating from edit
         <a
           class="nhsuk-back-link__link"
           href="/templates/manage-templates"
+          id="back-link"
         >
           <svg
             aria-hidden="true"
@@ -497,6 +499,7 @@ exports[`Review nhs app form renders matches snapshot when navigating from manag
         <a
           class="nhsuk-back-link__link"
           href="/templates/manage-templates"
+          id="back-link"
         >
           <svg
             aria-hidden="true"

frontend/src/__tests__/components/forms/ReviewSMSTemplate/__snapshots__/ReviewSMSTemplate.test.tsx.snap

@@ -14,6 +14,7 @@ exports[`Review sms form renders matches error snapshot 1`] = `
         <a
           class="nhsuk-back-link__link"
           href="/templates/manage-templates"
+          id="back-link"
         >
           <svg
             aria-hidden="true"
@@ -274,6 +275,7 @@ exports[`Review sms form renders matches snapshot when navigating from edit scre
         <a
           class="nhsuk-back-link__link"
           href="/templates/manage-templates"
+          id="back-link"
         >
           <svg
             aria-hidden="true"
@@ -497,6 +499,7 @@ exports[`Review sms form renders matches snapshot when navigating from manage te
         <a
           class="nhsuk-back-link__link"
           href="/templates/manage-templates"
+          id="back-link"
         >
           <svg
             aria-hidden="true"

frontend/src/components/forms/ReviewEmailTemplate/ReviewEmailTemplate.tsx

@@ -36,7 +36,7 @@ export function ReviewEmailTemplate({
   return (
     <div className='nhsuk-grid-row'>
       <div className='nhsuk-grid-column-full'>
-        <BackLink href={`${getBasePath()}/manage-templates`}>
+        <BackLink href={`${getBasePath()}/manage-templates`} id='back-link'>
           Back to all templates
         </BackLink>
         <ReviewTemplate

frontend/src/components/forms/ReviewNHSAppTemplate/ReviewNHSAppTemplate.tsx

@@ -38,7 +38,7 @@ export function ReviewNHSAppTemplate({
   return (
     <div className='nhsuk-grid-row'>
       <div className='nhsuk-grid-column-full'>
-        <BackLink href={`${getBasePath()}/manage-templates`}>
+        <BackLink href={`${getBasePath()}/manage-templates`} id='back-link'>
           Back to all templates
         </BackLink>
         <ReviewTemplate

frontend/src/components/forms/ReviewSMSTemplate/ReviewSMSTemplate.tsx

@@ -34,7 +34,7 @@ export function ReviewSMSTemplate({
   return (
     <div className='nhsuk-grid-row'>
       <div className='nhsuk-grid-column-full'>
-        <BackLink href={`${getBasePath()}/manage-templates`}>
+        <BackLink href={`${getBasePath()}/manage-templates`} id='back-link'>
           Back to all templates
         </BackLink>
         <ReviewTemplate