I have some questions about https://symfony.com/doc/current/form/form_collections.html#allowing-tags-to-be-removed that I'd like to discuss before I can come up with a PR:

1. Depending on your persistence layer, this may or may not be enough to actually remove the relationship between the removed Tag and Task object.

   • What does "remove the relationship" mean? In my mind, I want to delete the child entity (Tag), not only remove its connection to the parent entity (Task).
   • The setting which "Depending on your persistence layer" is referring to is orphanRemoval, right? I'd like to mention this explicitly - but in this paragraph or in the box about Doctrine? Why is Doctrine treated like a special case in its own box at all?

2. Normally in this case you'll have a many-to-one relationship and the deleted tags will disappear and persist correctly

   • The entire page is about a Task --1:n--> Tag relation. So what does "Normally in this case" mean, and why is the opposite direction even mentioned at all?
   • In Doctrine, the owning side is always the "many" side, so "and the deleted tags will disappear and persist correctly" is not true, IMO.