Follow: Adopt Entity API for state mgmt

As already shared, this task was done without confidence, step by step, without overview. I am not sure it works the expected way, but at least I have no fatal anymore.

Pipeline is KO, but it is about YML files I haven's touched:

fixtures/default_entity_view_full.yml                 1       0
fixtures/default_entity_view_teaser.yml               1       0
[x] Drupal.Files.EndFileNewline.TooMany                          2

https://git.drupalcode.org/project/display_builder_dev_tools/-/merge_req...