Removed /entity from POST

[hanoii]

Works from 8.4+ and compatible with 9+.

I'd say it's safe to update?

/entity is not working on D9 because of the following:

• Change Record: https://www.drupal.org/node/2737401
• https://www.drupal.org/project/drupal/issues/2293697

It's being discussed to be brought back in for 9.3, but deprecated and removed on 10.

• https://www.drupal.org/project/drupal/issues/3153769

[signalpoint]

Thank you @hanoii !