feat(WEB-209): revalidate my pages navigation on demand

lib/graphql/Fragments/MyPages/Breadcrumbs.graphql

@@ -1,4 +1,4 @@
-fragment Breadcrumbs on AccountPage {
+fragment MyPagesBreadcrumbs on AccountPage {
   breadcrumbs {
     title
     parents: parentsConnection {

lib/graphql/Fragments/Refs/AccountPage.graphql

@@ -0,0 +1,7 @@
+#import "./System.graphql"
+
+fragment AccountPageRef on AccountPage {
+  system {
+    ...System
+  }
+}

lib/graphql/Fragments/Refs/ContentPage.graphql

@@ -0,0 +1,7 @@
+#import "./System.graphql"
+
+fragment ContentPageRef on ContentPage {
+  system {
+    ...System
+  }
+}

lib/graphql/Fragments/Refs/LoyaltyPage.graphql

@@ -0,0 +1,7 @@
+#import "./System.graphql"
+
+fragment LoyaltyPageRef on LoyaltyPage {
+  system {
+    ...System
+  }
+}

lib/graphql/Fragments/Refs/System.graphql

@@ -0,0 +1,4 @@
+fragment System on EntrySystemField {
+  content_type_uid
+  uid
+}