restore bugfix for missing @page_facets

fixes #305
Jessica previously fixed this bug but the fix wasn't applied to the new method

app/helpers/orchid/facet_helper.rb

@@ -16,14 +16,21 @@ def create_label(key, default="No Label")
   #     used for URL creation and translation matching
   # label: non normalized value ("Willa Cather", '"Yellowstone Kelly"')
   def facet_label(type: nil, normalized: nil, label: nil)
-    # determine if translation needed
-    info = @page_facets[type]
-    if info && info["flags"] && info["flags"].include?("translate")
-      # do not need "label" since that will be found in the locale info
-      facet_label_translation(type: type, normalized: normalized)
+    # if @page_facets are not present, for example if a search_preset
+    # view or a custom action are using the metadata method,
+    # do not error but just skip possible translations
+    if @page_facets.present?
+      # determine if translation needed
+      info = @page_facets[type]
+      if info && info["flags"] && info["flags"].include?("translate")
+        # do not need "label" since that will be found in the locale info
+        facet_label_translation(type: type, normalized: normalized)
+      else
+        # if there is no label specified, use the normalized version
+        sanitize(label) || normalized
+      end
     else
-      # if there is no label specified, use the normalized version
-      sanitize(label) || normalized
+      label
     end
   end