update references to ::Collection to use configurations

Places where any collection class could be input or processing occurs across all collection classes were updated to use `Hyrax.config.collection_classes`.  Remaining single references to `::Collection` were updated to `Hyrax.config.collection_class`.  These changes allow for almost all remaining uses of `::Collection` to be removed.

Exceptions:
* work_form which is only used with ActiveFedora
* `PermissionTemplate #collection` which is deprecated and only works with `::Collection`
* `Hyrax::Collections::MigrationService` which performs a migration dependent on reading in the collection as a `::Collection`

This PR does not update `CollectionAbiility` as it is being updated in PR #5206.  Whichever PR is merged first, there will be a small fix required to get abilities to reference the `collection_classes` config instead of creating the list in the `CollectionAbility` class.

app/helpers/hyrax/file_set_helper.rb

@@ -14,7 +14,7 @@ def display_media_download_link?(file_set:)
   end
 
   def parent_path(parent)
-    if parent.is_a?(::Collection)
+    if Hyrax.config.collection_classes.any? { |klas| parent.is_a? klas }
       main_app.collection_path(parent)
     else
       polymorphic_path([main_app, parent])

app/helpers/hyrax/hyrax_helper_behavior.rb

@@ -285,7 +285,7 @@ def user_display_name_and_key(user_key)
 
     # Used by the gallery view
     def collection_thumbnail(_document, _image_options = {}, _url_options = {})
-      tag.span("", class: [Hyrax::ModelIcon.css_class_for(::Collection), "collection-icon-search"])
+      tag.span("", class: [Hyrax::ModelIcon.css_class_for(Hyrax.config.collection_class), "collection-icon-search"])
     end
 
     def collection_title_by_id(id)

app/search_builders/hyrax/exposed_models_relation.rb

@@ -3,7 +3,7 @@ module Hyrax
   # A relation that scopes to all user visible models (e.g. works + collections + file sets)
   class ExposedModelsRelation < AbstractTypeRelation
     def allowable_types
-      (Hyrax.config.curation_concerns + [Hyrax.config.collection_class, ::Collection, ::FileSet]).uniq
+      (Hyrax.config.curation_concerns + Hyrax.config.collection_classes + [::FileSet]).uniq
     end
   end
 end

app/search_builders/hyrax/filter_by_type.rb

@@ -53,7 +53,7 @@ def work_classes
 
     def collection_classes
       return [] if only_works?
-      [::Collection, Hyrax.config.collection_class].uniq
+      Hyrax.config.collection_classes
     end
   end
 end

app/views/hyrax/collections/_list_collections.html.erb

@@ -3,7 +3,7 @@
   <td></td>
   <td>
     <div class="media">
-      <span class="<%= Hyrax::ModelIcon.css_class_for(::Collection) %> collection-icon-small pull-left"></span>
+      <span class="<%= Hyrax::ModelIcon.css_class_for(Hyrax.config.collection_class) %> collection-icon-small pull-left"></span>
       <div class="media-body">
         <div class="media-heading">
           <%= link_to collection_presenter.show_path do %>

app/views/hyrax/collections/_media_display.html.erb

@@ -4,5 +4,5 @@
                 alt: "",
                 role: "presentation" %>
 <% else %>
-  <span class="<%= Hyrax::ModelIcon.css_class_for(::Collection) %> collection-icon-search" aria-hidden="true"></span>
+  <span class="<%= Hyrax::ModelIcon.css_class_for(Hyrax.config.collection_class) %> collection-icon-search" aria-hidden="true"></span>
 <% end %>

app/views/hyrax/dashboard/collections/_list_collections.html.erb

@@ -19,7 +19,7 @@
     <div class="thumbnail-title-wrapper">
       <div class="thumbnail-wrapper">
         <% if (collection_presenter.thumbnail_path == nil) %>
-          <span class="<%= Hyrax::ModelIcon.css_class_for(::Collection) %> collection-icon-small"></span>
+          <span class="<%= Hyrax::ModelIcon.css_class_for(Hyrax.config.collection_class) %> collection-icon-small"></span>
         <% else %>
           <%= image_tag(collection_presenter.thumbnail_path, alt: "#{collection_presenter.title_or_label} #{t('hyrax.dashboard.my.sr.thumbnail')}") %>
         <% end %>

app/views/hyrax/my/collections/_list_collections.html.erb

@@ -21,7 +21,7 @@
     <div class="thumbnail-title-wrapper">
       <div class="thumbnail-wrapper">
         <% if (collection_presenter.thumbnail_path == nil) %>
-          <span class="<%= Hyrax::ModelIcon.css_class_for(::Collection) %> collection-icon-small"></span>
+          <span class="<%= Hyrax::ModelIcon.css_class_for(Hyrax.config.collection_class) %> collection-icon-small"></span>
         <% else %>
           <%= image_tag(collection_presenter.thumbnail_path, alt: "#{collection_presenter.title_or_label} #{t('hyrax.dashboard.my.sr.thumbnail')}") %>
         <% end %>