TD-1682 addition of nhsuk-u-reading-width class to the error summary div.

Author: OluwatobiAwe

NHSUKViewComponents.Web/Views/Shared/Components/ErrorSummary/Default.cshtml

@@ -3,7 +3,7 @@
 
 @if(Model.Errors.Any())
 {
-    <div class="nhsuk-error-summary" aria-labelledby="error-summary-title" role="alert" tabindex="-1">
+    <div class="nhsuk-error-summary nhsuk-u-reading-width" aria-labelledby="error-summary-title" role="alert" tabindex="-1">
       <h2 class="nhsuk-error-summary__title" id="error-summary-title">
         There is a problem
       </h2>
@@ -21,7 +21,7 @@
 }
 else
 {
-    <div class="nhsuk-error-summary validation-summary-errors validation-summary-valid" data-valmsg-summary="true" aria-labelledby="error-summary-title" role="alert" tabindex="-1">
+    <div class="nhsuk-error-summary validation-summary-errors validation-summary-valid nhsuk-u-reading-width" data-valmsg-summary="true" aria-labelledby="error-summary-title" role="alert" tabindex="-1">
         <h2 class="nhsuk-error-summary__title" id="error-summary-title">
             There is a problem
         </h2>