fix(breadcrumbs): restore static and viewall label crumb resolution

components/breadcrumbs.js

@@ -94,7 +94,10 @@ const Breadcrumbs = (props) => {
             mySubmittedReps: "Submitted representations"
         };
 
-        return labelsByKey[viewKey] || null;
+        const viewAllLabelResolver = labelsByKey[viewKey];
+        return typeof viewAllLabelResolver === "function"
+            ? viewAllLabelResolver()
+            : viewAllLabelResolver || null;
     };
 
     const getStaticTextCrumbLabel = (path) => {
@@ -116,7 +119,8 @@ const Breadcrumbs = (props) => {
             "/auth/error": () => t("auth:auth-error-signin-error-title")
         };
 
-        return staticTextCrumbByPath[path] || null;
+        const staticTextCrumbResolver = staticTextCrumbByPath[path];
+        return staticTextCrumbResolver ? staticTextCrumbResolver() : null;
     };
 
     const renderMyPortalCrumb = () => (
@@ -175,7 +179,7 @@ const Breadcrumbs = (props) => {
 
     const renderBackCrumb = (
         onClick,
-        listItemClass = "govuk-breadcrumbs__link-item backChevron"
+        listItemClass = "govuk-breadcrumbs__list-item backChevron"
     ) => renderAnchorCrumb("#", t("common:back-link"), onClick, listItemClass);
 
     const renderDnsCaseReferenceCrumbs = (referenceValue) => (