Remove the usage warning messages from paragraphs_library and enable them in the entity_usage module

I'm postponing this for the entity_usage dependency.

+++ b/modules/paragraphs_library/paragraphs_library.install
@@ -45,6 +45,20 @@ function paragraphs_library_install() {
+  if (is_array($edit_warning_enabled) && !in_array('paragraphs_library_item', $edit_warning_enabled)) {
...
+  $delete_warning_enabled = $entity_usage_config->get('delete_warning_message_entity_types');

I think this is the problem why tests are not passing.

We should check if the result of edit_warning_enabled is empty or an array. When I installed paragraphs_demo, this was not enabled and it might be due to I didn't have any other entity type enabled in this setting.

[EDIT] While testing, I removed the is_array check and it seems that when installing for the first time, the setting returns null, maybe check if it is null too (?).

Looks pretty cool. Now we need to wait for Entity Usage to be ready.

For info, I just tagged alpha8 with #3002316: Optionally show warning messages when referenced entities are being edited / deleted included, so this could build on top of that.

Great, thanks!

Means we need a new patch that doesn't apply the patch anymore and then we should be good to go.

:-)

Thus committed. Great to have this so much more clean. :-)