CCM-9707 Update tests

Author: nicki-nhs

frontend/src/__tests__/components/molecules/__snapshots__/MessageTemplates.test.tsx.snap

@@ -280,7 +280,7 @@ exports[`MessageTemplates component matches snapshot with not submitted status 1
               >
                 Type 
               </span>
-              Letter - French
+              Standard letter - French
             </td>
             <td
               class="nhsuk-table__cell"
@@ -604,7 +604,7 @@ exports[`MessageTemplates component matches snapshot with submitted status 1`] =
               >
                 Type 
               </span>
-              Letter - French
+              Standard letter - French
             </td>
             <td
               class="nhsuk-table__cell"

frontend/src/__tests__/components/molecules/__snapshots__/PreviewTemplateDetails.test.tsx.snap

@@ -227,7 +227,7 @@ exports[`PreviewTemplateDetails component renders letter template when testDataC
         <dd
           class="nhsuk-summary-list__value"
         >
-          Letter - French
+          Standard letter - French
         </dd>
       </div>
       <div
@@ -327,7 +327,7 @@ exports[`PreviewTemplateDetails component renders letter template when testPerso
         <dd
           class="nhsuk-summary-list__value"
         >
-          Letter - French
+          Standard letter - French
         </dd>
       </div>
       <div

frontend/src/__tests__/components/organisms/__snapshots__/PreviewLetterTemplate.test.tsx.snap

@@ -73,7 +73,7 @@ exports[`PreviewLetterTemplate component matches snapshot 1`] = `
               <dd
                 class="nhsuk-summary-list__value"
               >
-                Letter - Arabic
+                British Sign Language letter - Arabic
               </dd>
             </div>
             <div