Fix Issue #3075 by using None for local fields instead of Some(false) (#3088)

* Set insert and update form "local" to None

* Extra space to retrigger woodpecker

* Resolve code review request

https://github.com/LemmyNet/lemmy/pull/3088#discussion_r1229336958

* Remove extra space after None,

crates/apub/src/protocol/objects/group.rs

@@ -141,7 +141,7 @@ impl Group {
       deleted: None,
       nsfw: Some(self.sensitive.unwrap_or(false)),
       actor_id: Some(self.id.into()),
-      local: Some(false),
+      local: None,
       private_key: None,
       hidden: Some(false),
       public_key: Some(self.public_key.public_key_pem),