Method: is_gallery_block_with_specific_css_class

Method: maintain_gallery_during_attach_and_detach

Method: remove_attachment_from_gallery

Method: Removes our `edit_post_{post-type}` hooks, calls `wp_update_post()`, and re-adds the hooks.

Method: unattach_when_removed

Method: inner_blocks_contains_id

Method: add_attachment_to_gallery

Method: Runs on edit_post hook. Changes the post_parent values on photos in our magic Gallery block.

Method: Makes sure the Gallery Block is waiting for the user when they open a vehicle post in the block editor.

Method: delete_attachment_handler