Always filter out disabled images

app/views/wds_servers/_image_select.html.erb

@@ -2,8 +2,8 @@
   <%-
     host = @host || f.object.host
     server = host.public_send(:wds_server) rescue nil
-    images = server.all_images rescue []
-    images = images.select { |img| img.matches_architecture?(host.architecture) && img.enabled } if host.architecture
+    images = (server.all_images rescue []).select(&:enabled)
+    images = images.select { |img| img.matches_architecture?(host.architecture) } if host.architecture
     boot_images = images.select { |img| img.is_a?(ForemanWds::WdsBootImage) }
     install_images = images.select { |img| img.is_a?(ForemanWds::WdsInstallImage) }